1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
10 /// This file implements the ELF-specific dumper for llvm-readobj.
12 //===----------------------------------------------------------------------===//
14 #include "ARMEHABIPrinter.h"
15 #include "DwarfCFIEHPrinter.h"
17 #include "ObjDumper.h"
18 #include "StackMapPrinter.h"
19 #include "llvm-readobj.h"
20 #include "llvm/ADT/ArrayRef.h"
21 #include "llvm/ADT/DenseMap.h"
22 #include "llvm/ADT/DenseSet.h"
23 #include "llvm/ADT/MapVector.h"
24 #include "llvm/ADT/Optional.h"
25 #include "llvm/ADT/PointerIntPair.h"
26 #include "llvm/ADT/STLExtras.h"
27 #include "llvm/ADT/SmallString.h"
28 #include "llvm/ADT/SmallVector.h"
29 #include "llvm/ADT/StringExtras.h"
30 #include "llvm/ADT/StringRef.h"
31 #include "llvm/ADT/Twine.h"
32 #include "llvm/BinaryFormat/AMDGPUMetadataVerifier.h"
33 #include "llvm/BinaryFormat/ELF.h"
34 #include "llvm/Demangle/Demangle.h"
35 #include "llvm/Object/ELF.h"
36 #include "llvm/Object/ELFObjectFile.h"
37 #include "llvm/Object/ELFTypes.h"
38 #include "llvm/Object/Error.h"
39 #include "llvm/Object/ObjectFile.h"
40 #include "llvm/Object/RelocationResolver.h"
41 #include "llvm/Object/StackMapParser.h"
42 #include "llvm/Support/AMDGPUMetadata.h"
43 #include "llvm/Support/ARMAttributeParser.h"
44 #include "llvm/Support/ARMBuildAttributes.h"
45 #include "llvm/Support/Casting.h"
46 #include "llvm/Support/Compiler.h"
47 #include "llvm/Support/Endian.h"
48 #include "llvm/Support/ErrorHandling.h"
49 #include "llvm/Support/Format.h"
50 #include "llvm/Support/FormatVariadic.h"
51 #include "llvm/Support/FormattedStream.h"
52 #include "llvm/Support/LEB128.h"
53 #include "llvm/Support/MathExtras.h"
54 #include "llvm/Support/MipsABIFlags.h"
55 #include "llvm/Support/ScopedPrinter.h"
56 #include "llvm/Support/raw_ostream.h"
65 #include <system_error>
66 #include <unordered_set>
70 using namespace llvm::object;
73 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \
77 #define ENUM_ENT(enum, altName) \
78 { #enum, altName, ELF::enum }
80 #define ENUM_ENT_1(enum) \
81 { #enum, #enum, ELF::enum }
83 #define LLVM_READOBJ_PHDR_ENUM(ns, enum) \
85 return std::string(#enum).substr(3);
87 #define TYPEDEF_ELF_TYPES(ELFT) \
88 using ELFO = ELFFile<ELFT>; \
89 using Elf_Addr = typename ELFT::Addr; \
90 using Elf_Shdr = typename ELFT::Shdr; \
91 using Elf_Sym = typename ELFT::Sym; \
92 using Elf_Dyn = typename ELFT::Dyn; \
93 using Elf_Dyn_Range = typename ELFT::DynRange; \
94 using Elf_Rel = typename ELFT::Rel; \
95 using Elf_Rela = typename ELFT::Rela; \
96 using Elf_Relr = typename ELFT::Relr; \
97 using Elf_Rel_Range = typename ELFT::RelRange; \
98 using Elf_Rela_Range = typename ELFT::RelaRange; \
99 using Elf_Relr_Range = typename ELFT::RelrRange; \
100 using Elf_Phdr = typename ELFT::Phdr; \
101 using Elf_Half = typename ELFT::Half; \
102 using Elf_Ehdr = typename ELFT::Ehdr; \
103 using Elf_Word = typename ELFT::Word; \
104 using Elf_Hash = typename ELFT::Hash; \
105 using Elf_GnuHash = typename ELFT::GnuHash; \
106 using Elf_Note = typename ELFT::Note; \
107 using Elf_Sym_Range = typename ELFT::SymRange; \
108 using Elf_Versym = typename ELFT::Versym; \
109 using Elf_Verneed = typename ELFT::Verneed; \
110 using Elf_Vernaux = typename ELFT::Vernaux; \
111 using Elf_Verdef = typename ELFT::Verdef; \
112 using Elf_Verdaux = typename ELFT::Verdaux; \
113 using Elf_CGProfile = typename ELFT::CGProfile; \
114 using uintX_t = typename ELFT::uint;
118 template <class ELFT> class DumpStyle;
120 /// Represents a contiguous uniform range in the file. We cannot just create a
121 /// range directly because when creating one of these from the .dynamic table
122 /// the size, entity size and virtual address are different entries in arbitrary
123 /// order (DT_REL, DT_RELSZ, DT_RELENT for example).
124 struct DynRegionInfo {
125 DynRegionInfo(StringRef ObjName) : FileName(ObjName) {}
126 DynRegionInfo(const void *A, uint64_t S, uint64_t ES, StringRef ObjName)
127 : Addr(A), Size(S), EntSize(ES), FileName(ObjName) {}
129 /// Address in current address space.
130 const void *Addr = nullptr;
131 /// Size in bytes of the region.
133 /// Size of each entity in the region.
134 uint64_t EntSize = 0;
136 /// Name of the file. Used for error reporting.
139 template <typename Type> ArrayRef<Type> getAsArrayRef() const {
140 const Type *Start = reinterpret_cast<const Type *>(Addr);
142 return {Start, Start};
143 if (EntSize != sizeof(Type) || Size % EntSize) {
144 // TODO: Add a section index to this warning.
145 reportWarning(createError("invalid section size (" + Twine(Size) +
146 ") or entity size (" + Twine(EntSize) + ")"),
148 return {Start, Start};
150 return {Start, Start + (Size / EntSize)};
168 std::vector<VerdAux> AuxV;
184 std::vector<VernAux> AuxV;
189 template <typename ELFT> class ELFDumper : public ObjDumper {
191 ELFDumper(const object::ELFObjectFile<ELFT> *ObjF, ScopedPrinter &Writer);
193 void printFileHeaders() override;
194 void printSectionHeaders() override;
195 void printRelocations() override;
196 void printDependentLibs() override;
197 void printDynamicRelocations() override;
198 void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
199 void printHashSymbols() override;
200 void printUnwindInfo() override;
202 void printDynamicTable() override;
203 void printNeededLibraries() override;
204 void printProgramHeaders(bool PrintProgramHeaders,
205 cl::boolOrDefault PrintSectionMapping) override;
206 void printHashTable() override;
207 void printGnuHashTable() override;
208 void printLoadName() override;
209 void printVersionInfo() override;
210 void printGroupSections() override;
212 void printArchSpecificInfo() override;
214 void printStackMap() const override;
216 void printHashHistogram() override;
218 void printCGProfile() override;
219 void printAddrsig() override;
221 void printNotes() override;
223 void printELFLinkerOptions() override;
224 void printStackSizes() override;
226 const object::ELFObjectFile<ELFT> *getElfObject() const { return ObjF; };
229 std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle;
231 TYPEDEF_ELF_TYPES(ELFT)
233 DynRegionInfo checkDRI(DynRegionInfo DRI) {
234 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
235 if (DRI.Addr < Obj->base() ||
236 reinterpret_cast<const uint8_t *>(DRI.Addr) + DRI.Size >
237 Obj->base() + Obj->getBufSize())
238 reportError(errorCodeToError(llvm::object::object_error::parse_failed),
239 ObjF->getFileName());
243 DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) {
244 return checkDRI({ObjF->getELFFile()->base() + P->p_offset, P->p_filesz,
245 EntSize, ObjF->getFileName()});
248 DynRegionInfo createDRIFrom(const Elf_Shdr *S) {
249 return checkDRI({ObjF->getELFFile()->base() + S->sh_offset, S->sh_size,
250 S->sh_entsize, ObjF->getFileName()});
253 void printAttributes();
254 void printMipsReginfo();
255 void printMipsOptions();
257 std::pair<const Elf_Phdr *, const Elf_Shdr *>
258 findDynamic(const ELFFile<ELFT> *Obj);
259 void loadDynamicTable(const ELFFile<ELFT> *Obj);
260 void parseDynamicTable(const ELFFile<ELFT> *Obj);
262 Expected<StringRef> getSymbolVersion(const Elf_Sym *symb,
263 bool &IsDefault) const;
264 Error LoadVersionMap() const;
266 const object::ELFObjectFile<ELFT> *ObjF;
267 DynRegionInfo DynRelRegion;
268 DynRegionInfo DynRelaRegion;
269 DynRegionInfo DynRelrRegion;
270 DynRegionInfo DynPLTRelRegion;
271 DynRegionInfo DynSymRegion;
272 DynRegionInfo DynamicTable;
273 StringRef DynamicStringTable;
274 std::string SOName = "<Not found>";
275 const Elf_Hash *HashTable = nullptr;
276 const Elf_GnuHash *GnuHashTable = nullptr;
277 const Elf_Shdr *DotSymtabSec = nullptr;
278 const Elf_Shdr *DotCGProfileSec = nullptr;
279 const Elf_Shdr *DotAddrsigSec = nullptr;
280 StringRef DynSymtabName;
281 ArrayRef<Elf_Word> ShndxTable;
283 const Elf_Shdr *SymbolVersionSection = nullptr; // .gnu.version
284 const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r
285 const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d
287 struct VersionEntry {
291 mutable SmallVector<Optional<VersionEntry>, 16> VersionMap;
294 Elf_Dyn_Range dynamic_table() const {
295 // A valid .dynamic section contains an array of entries terminated
296 // with a DT_NULL entry. However, sometimes the section content may
297 // continue past the DT_NULL entry, so to dump the section correctly,
298 // we first find the end of the entries by iterating over them.
299 Elf_Dyn_Range Table = DynamicTable.getAsArrayRef<Elf_Dyn>();
302 while (Size < Table.size())
303 if (Table[Size++].getTag() == DT_NULL)
306 return Table.slice(0, Size);
309 Elf_Sym_Range dynamic_symbols() const {
310 return DynSymRegion.getAsArrayRef<Elf_Sym>();
313 Elf_Rel_Range dyn_rels() const;
314 Elf_Rela_Range dyn_relas() const;
315 Elf_Relr_Range dyn_relrs() const;
316 std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable,
317 bool IsDynamic) const;
318 Expected<unsigned> getSymbolSectionIndex(const Elf_Sym *Symbol,
319 const Elf_Sym *FirstSym) const;
320 Expected<StringRef> getSymbolSectionName(const Elf_Sym *Symbol,
321 unsigned SectionIndex) const;
322 Expected<std::string> getStaticSymbolName(uint32_t Index) const;
323 std::string getDynamicString(uint64_t Value) const;
324 Expected<StringRef> getSymbolVersionByIndex(uint32_t VersionSymbolIndex,
325 bool &IsDefault) const;
327 void printSymbolsHelper(bool IsDynamic) const;
328 void printDynamicEntry(raw_ostream &OS, uint64_t Type, uint64_t Value) const;
330 const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; }
331 const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; }
332 const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; }
333 ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; }
334 StringRef getDynamicStringTable() const { return DynamicStringTable; }
335 const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; }
336 const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; }
337 const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; }
338 const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; }
339 const DynRegionInfo &getDynamicTableRegion() const { return DynamicTable; }
340 const Elf_Hash *getHashTable() const { return HashTable; }
341 const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; }
343 Expected<ArrayRef<Elf_Versym>> getVersionTable(const Elf_Shdr *Sec,
344 ArrayRef<Elf_Sym> *SymTab,
345 StringRef *StrTab) const;
346 Expected<std::vector<VerDef>>
347 getVersionDefinitions(const Elf_Shdr *Sec) const;
348 Expected<std::vector<VerNeed>>
349 getVersionDependencies(const Elf_Shdr *Sec) const;
352 template <class ELFT>
353 static Expected<StringRef> getLinkAsStrtab(const ELFFile<ELFT> *Obj,
354 const typename ELFT::Shdr *Sec,
356 Expected<const typename ELFT::Shdr *> StrTabSecOrErr =
357 Obj->getSection(Sec->sh_link);
359 return createError("invalid section linked to " +
360 object::getELFSectionTypeName(
361 Obj->getHeader()->e_machine, Sec->sh_type) +
362 " section with index " + Twine(SecNdx) + ": " +
363 toString(StrTabSecOrErr.takeError()));
365 Expected<StringRef> StrTabOrErr = Obj->getStringTable(*StrTabSecOrErr);
367 return createError("invalid string table linked to " +
368 object::getELFSectionTypeName(
369 Obj->getHeader()->e_machine, Sec->sh_type) +
370 " section with index " + Twine(SecNdx) + ": " +
371 toString(StrTabOrErr.takeError()));
375 // Returns the linked symbol table and associated string table for a given section.
376 template <class ELFT>
377 static Expected<std::pair<typename ELFT::SymRange, StringRef>>
378 getLinkAsSymtab(const ELFFile<ELFT> *Obj, const typename ELFT::Shdr *Sec,
379 unsigned SecNdx, unsigned ExpectedType) {
380 Expected<const typename ELFT::Shdr *> SymtabOrErr =
381 Obj->getSection(Sec->sh_link);
383 return createError("invalid section linked to " +
384 object::getELFSectionTypeName(
385 Obj->getHeader()->e_machine, Sec->sh_type) +
386 " section with index " + Twine(SecNdx) + ": " +
387 toString(SymtabOrErr.takeError()));
389 if ((*SymtabOrErr)->sh_type != ExpectedType)
391 "invalid section linked to " +
392 object::getELFSectionTypeName(Obj->getHeader()->e_machine,
394 " section with index " + Twine(SecNdx) + ": expected " +
395 object::getELFSectionTypeName(Obj->getHeader()->e_machine,
398 object::getELFSectionTypeName(Obj->getHeader()->e_machine,
399 (*SymtabOrErr)->sh_type));
401 Expected<StringRef> StrTabOrErr =
402 getLinkAsStrtab(Obj, *SymtabOrErr, Sec->sh_link);
405 "can't get a string table for the symbol table linked to " +
406 object::getELFSectionTypeName(Obj->getHeader()->e_machine,
408 " section with index " + Twine(SecNdx) + ": " +
409 toString(StrTabOrErr.takeError()));
411 Expected<typename ELFT::SymRange> SymsOrErr = Obj->symbols(*SymtabOrErr);
414 "unable to read symbols from the symbol table with index " +
415 Twine(Sec->sh_link) + ": " + toString(SymsOrErr.takeError()));
417 return std::make_pair(*SymsOrErr, *StrTabOrErr);
420 template <class ELFT>
421 Expected<ArrayRef<typename ELFT::Versym>>
422 ELFDumper<ELFT>::getVersionTable(const Elf_Shdr *Sec, ArrayRef<Elf_Sym> *SymTab,
423 StringRef *StrTab) const {
424 assert((!SymTab && !StrTab) || (SymTab && StrTab));
425 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
426 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front();
428 if (uintptr_t(Obj->base() + Sec->sh_offset) % sizeof(uint16_t) != 0)
429 return createError("the SHT_GNU_versym section with index " +
430 Twine(SecNdx) + " is misaligned");
432 Expected<ArrayRef<Elf_Versym>> VersionsOrErr =
433 Obj->template getSectionContentsAsArray<Elf_Versym>(Sec);
436 "cannot read content of SHT_GNU_versym section with index " +
437 Twine(SecNdx) + ": " + toString(VersionsOrErr.takeError()));
439 Expected<std::pair<ArrayRef<Elf_Sym>, StringRef>> SymTabOrErr =
440 getLinkAsSymtab(Obj, Sec, SecNdx, SHT_DYNSYM);
442 ELFDumperStyle->reportUniqueWarning(SymTabOrErr.takeError());
443 return *VersionsOrErr;
446 if (SymTabOrErr->first.size() != VersionsOrErr->size())
447 ELFDumperStyle->reportUniqueWarning(
448 createError("SHT_GNU_versym section with index " + Twine(SecNdx) +
449 ": the number of entries (" + Twine(VersionsOrErr->size()) +
450 ") does not match the number of symbols (" +
451 Twine(SymTabOrErr->first.size()) +
452 ") in the symbol table with index " + Twine(Sec->sh_link)));
455 std::tie(*SymTab, *StrTab) = *SymTabOrErr;
456 return *VersionsOrErr;
459 template <class ELFT>
460 Expected<std::vector<VerDef>>
461 ELFDumper<ELFT>::getVersionDefinitions(const Elf_Shdr *Sec) const {
462 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
463 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front();
465 Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec, SecNdx);
467 return StrTabOrErr.takeError();
469 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(Sec);
472 "cannot read content of SHT_GNU_verdef section with index " +
473 Twine(SecNdx) + ": " + toString(ContentsOrErr.takeError()));
475 const uint8_t *Start = ContentsOrErr->data();
476 const uint8_t *End = Start + ContentsOrErr->size();
478 auto ExtractNextAux = [&](const uint8_t *&VerdauxBuf,
479 unsigned VerDefNdx) -> Expected<VerdAux> {
480 if (VerdauxBuf + sizeof(Elf_Verdaux) > End)
481 return createError("invalid SHT_GNU_verdef section with index " +
482 Twine(SecNdx) + ": version definition " +
484 " refers to an auxiliary entry that goes past the end "
487 auto *Verdaux = reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf);
488 VerdauxBuf += Verdaux->vda_next;
491 Aux.Offset = VerdauxBuf - Start;
492 if (Verdaux->vda_name <= StrTabOrErr->size())
493 Aux.Name = StrTabOrErr->drop_front(Verdaux->vda_name);
495 Aux.Name = "<invalid vda_name: " + to_string(Verdaux->vda_name) + ">";
499 std::vector<VerDef> Ret;
500 const uint8_t *VerdefBuf = Start;
501 for (unsigned I = 1; I <= /*VerDefsNum=*/Sec->sh_info; ++I) {
502 if (VerdefBuf + sizeof(Elf_Verdef) > End)
503 return createError("invalid SHT_GNU_verdef section with index " +
504 Twine(SecNdx) + ": version definition " + Twine(I) +
505 " goes past the end of the section");
507 if (uintptr_t(VerdefBuf) % sizeof(uint32_t) != 0)
509 "invalid SHT_GNU_verdef section with index " + Twine(SecNdx) +
510 ": found a misaligned version definition entry at offset 0x" +
511 Twine::utohexstr(VerdefBuf - Start));
513 unsigned Version = *reinterpret_cast<const Elf_Half *>(VerdefBuf);
515 return createError("unable to dump SHT_GNU_verdef section with index " +
516 Twine(SecNdx) + ": version " + Twine(Version) +
517 " is not yet supported");
519 const Elf_Verdef *D = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
520 VerDef &VD = *Ret.emplace(Ret.end());
521 VD.Offset = VerdefBuf - Start;
522 VD.Version = D->vd_version;
523 VD.Flags = D->vd_flags;
526 VD.Hash = D->vd_hash;
528 const uint8_t *VerdauxBuf = VerdefBuf + D->vd_aux;
529 for (unsigned J = 0; J < D->vd_cnt; ++J) {
530 if (uintptr_t(VerdauxBuf) % sizeof(uint32_t) != 0)
531 return createError("invalid SHT_GNU_verdef section with index " +
533 ": found a misaligned auxiliary entry at offset 0x" +
534 Twine::utohexstr(VerdauxBuf - Start));
536 Expected<VerdAux> AuxOrErr = ExtractNextAux(VerdauxBuf, I);
538 return AuxOrErr.takeError();
541 VD.Name = AuxOrErr->Name;
543 VD.AuxV.push_back(*AuxOrErr);
546 VerdefBuf += D->vd_next;
552 template <class ELFT>
553 Expected<std::vector<VerNeed>>
554 ELFDumper<ELFT>::getVersionDependencies(const Elf_Shdr *Sec) const {
555 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
556 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front();
559 Expected<StringRef> StrTabOrErr = getLinkAsStrtab(Obj, Sec, SecNdx);
561 ELFDumperStyle->reportUniqueWarning(StrTabOrErr.takeError());
563 StrTab = *StrTabOrErr;
565 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(Sec);
568 "cannot read content of SHT_GNU_verneed section with index " +
569 Twine(SecNdx) + ": " + toString(ContentsOrErr.takeError()));
571 const uint8_t *Start = ContentsOrErr->data();
572 const uint8_t *End = Start + ContentsOrErr->size();
573 const uint8_t *VerneedBuf = Start;
575 std::vector<VerNeed> Ret;
576 for (unsigned I = 1; I <= /*VerneedNum=*/Sec->sh_info; ++I) {
577 if (VerneedBuf + sizeof(Elf_Verdef) > End)
578 return createError("invalid SHT_GNU_verneed section with index " +
579 Twine(SecNdx) + ": version dependency " + Twine(I) +
580 " goes past the end of the section");
582 if (uintptr_t(VerneedBuf) % sizeof(uint32_t) != 0)
584 "invalid SHT_GNU_verneed section with index " + Twine(SecNdx) +
585 ": found a misaligned version dependency entry at offset 0x" +
586 Twine::utohexstr(VerneedBuf - Start));
588 unsigned Version = *reinterpret_cast<const Elf_Half *>(VerneedBuf);
590 return createError("unable to dump SHT_GNU_verneed section with index " +
591 Twine(SecNdx) + ": version " + Twine(Version) +
592 " is not yet supported");
594 const Elf_Verneed *Verneed =
595 reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
597 VerNeed &VN = *Ret.emplace(Ret.end());
598 VN.Version = Verneed->vn_version;
599 VN.Cnt = Verneed->vn_cnt;
600 VN.Offset = VerneedBuf - Start;
602 if (Verneed->vn_file < StrTab.size())
603 VN.File = StrTab.drop_front(Verneed->vn_file);
605 VN.File = "<corrupt vn_file: " + to_string(Verneed->vn_file) + ">";
607 const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
608 for (unsigned J = 0; J < Verneed->vn_cnt; ++J) {
609 if (uintptr_t(VernauxBuf) % sizeof(uint32_t) != 0)
610 return createError("invalid SHT_GNU_verneed section with index " +
612 ": found a misaligned auxiliary entry at offset 0x" +
613 Twine::utohexstr(VernauxBuf - Start));
615 if (VernauxBuf + sizeof(Elf_Vernaux) > End)
617 "invalid SHT_GNU_verneed section with index " + Twine(SecNdx) +
618 ": version dependency " + Twine(I) +
619 " refers to an auxiliary entry that goes past the end "
622 const Elf_Vernaux *Vernaux =
623 reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
625 VernAux &Aux = *VN.AuxV.emplace(VN.AuxV.end());
626 Aux.Hash = Vernaux->vna_hash;
627 Aux.Flags = Vernaux->vna_flags;
628 Aux.Other = Vernaux->vna_other;
629 Aux.Offset = VernauxBuf - Start;
630 if (StrTab.size() <= Vernaux->vna_name)
631 Aux.Name = "<corrupt>";
633 Aux.Name = StrTab.drop_front(Vernaux->vna_name);
635 VernauxBuf += Vernaux->vna_next;
637 VerneedBuf += Verneed->vn_next;
642 template <class ELFT>
643 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const {
644 StringRef StrTable, SymtabName;
646 Elf_Sym_Range Syms(nullptr, nullptr);
647 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
649 StrTable = DynamicStringTable;
650 Syms = dynamic_symbols();
651 SymtabName = DynSymtabName;
652 if (DynSymRegion.Addr)
653 Entries = DynSymRegion.Size / DynSymRegion.EntSize;
657 StrTable = unwrapOrError(ObjF->getFileName(),
658 Obj->getStringTableForSymtab(*DotSymtabSec));
659 Syms = unwrapOrError(ObjF->getFileName(), Obj->symbols(DotSymtabSec));
661 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(DotSymtabSec));
662 Entries = DotSymtabSec->getEntityCount();
664 if (Syms.begin() == Syms.end())
667 // The st_other field has 2 logical parts. The first two bits hold the symbol
668 // visibility (STV_*) and the remainder hold other platform-specific values.
669 bool NonVisibilityBitsUsed = llvm::find_if(Syms, [](const Elf_Sym &S) {
670 return S.st_other & ~0x3;
673 ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries,
674 NonVisibilityBitsUsed);
675 for (const auto &Sym : Syms)
676 ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic,
677 NonVisibilityBitsUsed);
680 template <class ELFT> class MipsGOTParser;
682 template <typename ELFT> class DumpStyle {
684 using Elf_Shdr = typename ELFT::Shdr;
685 using Elf_Sym = typename ELFT::Sym;
686 using Elf_Addr = typename ELFT::Addr;
688 DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {
689 FileName = this->Dumper->getElfObject()->getFileName();
691 // Dumper reports all non-critical errors as warnings.
692 // It does not print the same warning more than once.
693 WarningHandler = [this](const Twine &Msg) {
694 if (Warnings.insert(Msg.str()).second)
695 reportWarning(createError(Msg), FileName);
696 return Error::success();
700 virtual ~DumpStyle() = default;
702 virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0;
703 virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0;
704 virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0;
705 virtual void printSectionHeaders(const ELFFile<ELFT> *Obj) = 0;
706 virtual void printSymbols(const ELFFile<ELFT> *Obj, bool PrintSymbols,
707 bool PrintDynamicSymbols) = 0;
708 virtual void printHashSymbols(const ELFFile<ELFT> *Obj) {}
709 virtual void printDependentLibs(const ELFFile<ELFT> *Obj) = 0;
710 virtual void printDynamic(const ELFFile<ELFT> *Obj) {}
711 virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0;
712 virtual void printSymtabMessage(const ELFFile<ELFT> *Obj, StringRef Name,
713 size_t Offset, bool NonVisibilityBitsUsed) {}
714 virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol,
715 const Elf_Sym *FirstSym, StringRef StrTable,
716 bool IsDynamic, bool NonVisibilityBitsUsed) = 0;
717 virtual void printProgramHeaders(const ELFFile<ELFT> *Obj,
718 bool PrintProgramHeaders,
719 cl::boolOrDefault PrintSectionMapping) = 0;
720 virtual void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
721 const Elf_Shdr *Sec) = 0;
722 virtual void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
723 const Elf_Shdr *Sec) = 0;
724 virtual void printVersionDependencySection(const ELFFile<ELFT> *Obj,
725 const Elf_Shdr *Sec) = 0;
726 virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0;
727 virtual void printCGProfile(const ELFFile<ELFT> *Obj) = 0;
728 virtual void printAddrsig(const ELFFile<ELFT> *Obj) = 0;
729 virtual void printNotes(const ELFFile<ELFT> *Obj) = 0;
730 virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0;
731 virtual void printStackSizes(const ELFObjectFile<ELFT> *Obj) = 0;
732 void printNonRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj,
733 std::function<void()> PrintHeader);
734 void printRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj,
735 std::function<void()> PrintHeader);
736 void printFunctionStackSize(const ELFObjectFile<ELFT> *Obj, uint64_t SymValue,
737 SectionRef FunctionSec,
738 const StringRef SectionName, DataExtractor Data,
740 void printStackSize(const ELFObjectFile<ELFT> *Obj, RelocationRef Rel,
741 SectionRef FunctionSec,
742 const StringRef &StackSizeSectionName,
743 const RelocationResolver &Resolver, DataExtractor Data);
744 virtual void printStackSizeEntry(uint64_t Size, StringRef FuncName) = 0;
745 virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
746 virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
747 virtual void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) = 0;
748 const ELFDumper<ELFT> *dumper() const { return Dumper; }
750 void reportUniqueWarning(Error Err) const;
753 std::function<Error(const Twine &Msg)> WarningHandler;
757 std::unordered_set<std::string> Warnings;
758 const ELFDumper<ELFT> *Dumper;
761 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> {
762 formatted_raw_ostream &OS;
765 TYPEDEF_ELF_TYPES(ELFT)
767 GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
768 : DumpStyle<ELFT>(Dumper),
769 OS(static_cast<formatted_raw_ostream&>(W.getOStream())) {
770 assert (&W.getOStream() == &llvm::fouts());
773 void printFileHeaders(const ELFO *Obj) override;
774 void printGroupSections(const ELFFile<ELFT> *Obj) override;
775 void printRelocations(const ELFO *Obj) override;
776 void printSectionHeaders(const ELFO *Obj) override;
777 void printSymbols(const ELFO *Obj, bool PrintSymbols,
778 bool PrintDynamicSymbols) override;
779 void printHashSymbols(const ELFO *Obj) override;
780 void printDependentLibs(const ELFFile<ELFT> *Obj) override;
781 void printDynamic(const ELFFile<ELFT> *Obj) override;
782 void printDynamicRelocations(const ELFO *Obj) override;
783 void printSymtabMessage(const ELFO *Obj, StringRef Name, size_t Offset,
784 bool NonVisibilityBitsUsed) override;
785 void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
786 cl::boolOrDefault PrintSectionMapping) override;
787 void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
788 const Elf_Shdr *Sec) override;
789 void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
790 const Elf_Shdr *Sec) override;
791 void printVersionDependencySection(const ELFFile<ELFT> *Obj,
792 const Elf_Shdr *Sec) override;
793 void printHashHistogram(const ELFFile<ELFT> *Obj) override;
794 void printCGProfile(const ELFFile<ELFT> *Obj) override;
795 void printAddrsig(const ELFFile<ELFT> *Obj) override;
796 void printNotes(const ELFFile<ELFT> *Obj) override;
797 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
798 void printStackSizes(const ELFObjectFile<ELFT> *Obj) override;
799 void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
800 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
801 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
802 void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) override;
809 Field(StringRef S, unsigned Col) : Str(S), Column(Col) {}
810 Field(unsigned Col) : Column(Col) {}
813 template <typename T, typename TEnum>
814 std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) {
815 for (const auto &EnumItem : EnumValues)
816 if (EnumItem.Value == Value)
817 return EnumItem.AltName;
818 return to_hexString(Value, false);
821 template <typename T, typename TEnum>
822 std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues,
823 TEnum EnumMask1 = {}, TEnum EnumMask2 = {},
824 TEnum EnumMask3 = {}) {
826 for (const auto &Flag : EnumValues) {
831 if (Flag.Value & EnumMask1)
832 EnumMask = EnumMask1;
833 else if (Flag.Value & EnumMask2)
834 EnumMask = EnumMask2;
835 else if (Flag.Value & EnumMask3)
836 EnumMask = EnumMask3;
837 bool IsEnum = (Flag.Value & EnumMask) != 0;
838 if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
839 (IsEnum && (Value & EnumMask) == Flag.Value)) {
848 formatted_raw_ostream &printField(struct Field F) {
850 OS.PadToColumn(F.Column);
855 void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym,
856 StringRef StrTable, uint32_t Bucket);
857 void printRelocHeader(unsigned SType);
858 void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
859 const Elf_Rela &R, bool IsRela);
860 void printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
861 StringRef SymbolName, const Elf_Rela &R, bool IsRela);
862 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
863 StringRef StrTable, bool IsDynamic,
864 bool NonVisibilityBitsUsed) override;
865 std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol,
866 const Elf_Sym *FirstSym);
867 void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela);
868 bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
869 bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
870 bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
871 bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
872 void printProgramHeaders(const ELFO *Obj);
873 void printSectionMapping(const ELFO *Obj);
874 void printGNUVersionSectionProlog(const ELFFile<ELFT> *Obj,
875 const typename ELFT::Shdr *Sec,
876 const Twine &Label, unsigned EntriesNum);
879 template <class ELFT>
880 void DumpStyle<ELFT>::reportUniqueWarning(Error Err) const {
881 handleAllErrors(std::move(Err), [&](const ErrorInfoBase &EI) {
882 cantFail(WarningHandler(EI.message()),
883 "WarningHandler should always return ErrorSuccess");
887 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> {
889 TYPEDEF_ELF_TYPES(ELFT)
891 LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
892 : DumpStyle<ELFT>(Dumper), W(W) {}
894 void printFileHeaders(const ELFO *Obj) override;
895 void printGroupSections(const ELFFile<ELFT> *Obj) override;
896 void printRelocations(const ELFO *Obj) override;
897 void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj);
898 void printSectionHeaders(const ELFO *Obj) override;
899 void printSymbols(const ELFO *Obj, bool PrintSymbols,
900 bool PrintDynamicSymbols) override;
901 void printDependentLibs(const ELFFile<ELFT> *Obj) override;
902 void printDynamic(const ELFFile<ELFT> *Obj) override;
903 void printDynamicRelocations(const ELFO *Obj) override;
904 void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
905 cl::boolOrDefault PrintSectionMapping) override;
906 void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
907 const Elf_Shdr *Sec) override;
908 void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
909 const Elf_Shdr *Sec) override;
910 void printVersionDependencySection(const ELFFile<ELFT> *Obj,
911 const Elf_Shdr *Sec) override;
912 void printHashHistogram(const ELFFile<ELFT> *Obj) override;
913 void printCGProfile(const ELFFile<ELFT> *Obj) override;
914 void printAddrsig(const ELFFile<ELFT> *Obj) override;
915 void printNotes(const ELFFile<ELFT> *Obj) override;
916 void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
917 void printStackSizes(const ELFObjectFile<ELFT> *Obj) override;
918 void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
919 void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
920 void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
921 void printMipsABIFlags(const ELFObjectFile<ELFT> *Obj) override;
924 void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab);
925 void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel);
926 void printSymbols(const ELFO *Obj);
927 void printDynamicSymbols(const ELFO *Obj);
928 void printSymbolSection(const Elf_Sym *Symbol, const Elf_Sym *First);
929 void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
930 StringRef StrTable, bool IsDynamic,
931 bool /*NonVisibilityBitsUsed*/) override;
932 void printProgramHeaders(const ELFO *Obj);
933 void printSectionMapping(const ELFO *Obj) {}
938 } // end anonymous namespace
942 template <class ELFT>
943 static std::error_code createELFDumper(const ELFObjectFile<ELFT> *Obj,
944 ScopedPrinter &Writer,
945 std::unique_ptr<ObjDumper> &Result) {
946 Result.reset(new ELFDumper<ELFT>(Obj, Writer));
947 return readobj_error::success;
950 std::error_code createELFDumper(const object::ObjectFile *Obj,
951 ScopedPrinter &Writer,
952 std::unique_ptr<ObjDumper> &Result) {
953 // Little-endian 32-bit
954 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
955 return createELFDumper(ELFObj, Writer, Result);
958 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
959 return createELFDumper(ELFObj, Writer, Result);
961 // Little-endian 64-bit
962 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
963 return createELFDumper(ELFObj, Writer, Result);
966 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
967 return createELFDumper(ELFObj, Writer, Result);
969 return readobj_error::unsupported_obj_file_format;
972 } // end namespace llvm
974 template <class ELFT> Error ELFDumper<ELFT>::LoadVersionMap() const {
975 // If there is no dynamic symtab or version table, there is nothing to do.
976 if (!DynSymRegion.Addr || !SymbolVersionSection)
977 return Error::success();
979 // Has the VersionMap already been loaded?
980 if (!VersionMap.empty())
981 return Error::success();
983 // The first two version indexes are reserved.
984 // Index 0 is LOCAL, index 1 is GLOBAL.
985 VersionMap.push_back(VersionEntry());
986 VersionMap.push_back(VersionEntry());
988 auto InsertEntry = [this](unsigned N, StringRef Version, bool IsVerdef) {
989 if (N >= VersionMap.size())
990 VersionMap.resize(N + 1);
991 VersionMap[N] = {Version, IsVerdef};
994 if (SymbolVersionDefSection) {
995 Expected<std::vector<VerDef>> Defs =
996 this->getVersionDefinitions(SymbolVersionDefSection);
998 return Defs.takeError();
999 for (const VerDef &Def : *Defs)
1000 InsertEntry(Def.Ndx & ELF::VERSYM_VERSION, Def.Name, true);
1003 if (SymbolVersionNeedSection) {
1004 Expected<std::vector<VerNeed>> Deps =
1005 this->getVersionDependencies(SymbolVersionNeedSection);
1007 return Deps.takeError();
1008 for (const VerNeed &Dep : *Deps)
1009 for (const VernAux &Aux : Dep.AuxV)
1010 InsertEntry(Aux.Other & ELF::VERSYM_VERSION, Aux.Name, false);
1013 return Error::success();
1016 template <typename ELFT>
1017 Expected<StringRef> ELFDumper<ELFT>::getSymbolVersion(const Elf_Sym *Sym,
1018 bool &IsDefault) const {
1019 // This is a dynamic symbol. Look in the GNU symbol version table.
1020 if (!SymbolVersionSection) {
1021 // No version table.
1026 // Determine the position in the symbol table of this entry.
1027 size_t EntryIndex = (reinterpret_cast<uintptr_t>(Sym) -
1028 reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) /
1031 // Get the corresponding version index entry.
1032 const Elf_Versym *Versym = unwrapOrError(
1033 ObjF->getFileName(), ObjF->getELFFile()->template getEntry<Elf_Versym>(
1034 SymbolVersionSection, EntryIndex));
1035 return this->getSymbolVersionByIndex(Versym->vs_index, IsDefault);
1038 static std::string maybeDemangle(StringRef Name) {
1039 return opts::Demangle ? demangle(Name) : Name.str();
1042 template <typename ELFT>
1043 Expected<std::string>
1044 ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const {
1045 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
1046 Expected<const typename ELFT::Sym *> SymOrErr =
1047 Obj->getSymbol(DotSymtabSec, Index);
1049 return SymOrErr.takeError();
1051 Expected<StringRef> StrTabOrErr = Obj->getStringTableForSymtab(*DotSymtabSec);
1053 return StrTabOrErr.takeError();
1055 Expected<StringRef> NameOrErr = (*SymOrErr)->getName(*StrTabOrErr);
1057 return NameOrErr.takeError();
1058 return maybeDemangle(*NameOrErr);
1061 template <typename ELFT>
1063 ELFDumper<ELFT>::getSymbolVersionByIndex(uint32_t SymbolVersionIndex,
1064 bool &IsDefault) const {
1065 size_t VersionIndex = SymbolVersionIndex & VERSYM_VERSION;
1067 // Special markers for unversioned symbols.
1068 if (VersionIndex == VER_NDX_LOCAL || VersionIndex == VER_NDX_GLOBAL) {
1073 // Lookup this symbol in the version table.
1074 if (Error E = LoadVersionMap())
1075 return std::move(E);
1076 if (VersionIndex >= VersionMap.size() || !VersionMap[VersionIndex])
1077 return createError("SHT_GNU_versym section refers to a version index " +
1078 Twine(VersionIndex) + " which is missing");
1080 const VersionEntry &Entry = *VersionMap[VersionIndex];
1082 IsDefault = !(SymbolVersionIndex & VERSYM_HIDDEN);
1085 return Entry.Name.c_str();
1088 template <typename ELFT>
1089 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol,
1091 bool IsDynamic) const {
1092 std::string SymbolName = maybeDemangle(
1093 unwrapOrError(ObjF->getFileName(), Symbol->getName(StrTable)));
1095 if (SymbolName.empty() && Symbol->getType() == ELF::STT_SECTION) {
1096 Elf_Sym_Range Syms = unwrapOrError(
1097 ObjF->getFileName(), ObjF->getELFFile()->symbols(DotSymtabSec));
1098 Expected<unsigned> SectionIndex =
1099 getSymbolSectionIndex(Symbol, Syms.begin());
1100 if (!SectionIndex) {
1101 ELFDumperStyle->reportUniqueWarning(SectionIndex.takeError());
1104 Expected<StringRef> NameOrErr = getSymbolSectionName(Symbol, *SectionIndex);
1106 ELFDumperStyle->reportUniqueWarning(NameOrErr.takeError());
1107 return ("<section " + Twine(*SectionIndex) + ">").str();
1116 Expected<StringRef> VersionOrErr = getSymbolVersion(&*Symbol, IsDefault);
1117 if (!VersionOrErr) {
1118 ELFDumperStyle->reportUniqueWarning(VersionOrErr.takeError());
1119 return SymbolName + "@<corrupt>";
1122 if (!VersionOrErr->empty()) {
1123 SymbolName += (IsDefault ? "@@" : "@");
1124 SymbolName += *VersionOrErr;
1129 template <typename ELFT>
1131 ELFDumper<ELFT>::getSymbolSectionIndex(const Elf_Sym *Symbol,
1132 const Elf_Sym *FirstSym) const {
1133 return Symbol->st_shndx == SHN_XINDEX
1134 ? object::getExtendedSymbolTableIndex<ELFT>(Symbol, FirstSym,
1139 // If the Symbol has a reserved st_shndx other than SHN_XINDEX, return a
1140 // descriptive interpretation of the st_shndx value. Otherwise, return the name
1141 // of the section with index SectionIndex. This function assumes that if the
1142 // Symbol has st_shndx == SHN_XINDEX the SectionIndex will be the value derived
1143 // from the SHT_SYMTAB_SHNDX section.
1144 template <typename ELFT>
1146 ELFDumper<ELFT>::getSymbolSectionName(const Elf_Sym *Symbol,
1147 unsigned SectionIndex) const {
1148 if (Symbol->isUndefined())
1150 if (Symbol->isProcessorSpecific())
1151 return "Processor Specific";
1152 if (Symbol->isOSSpecific())
1153 return "Operating System Specific";
1154 if (Symbol->isAbsolute())
1156 if (Symbol->isCommon())
1158 if (Symbol->isReserved() && Symbol->st_shndx != SHN_XINDEX)
1161 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
1162 Expected<const Elf_Shdr *> SecOrErr =
1163 Obj->getSection(SectionIndex);
1165 return SecOrErr.takeError();
1166 return Obj->getSectionName(*SecOrErr);
1169 template <class ELFO>
1170 static const typename ELFO::Elf_Shdr *
1171 findNotEmptySectionByAddress(const ELFO *Obj, StringRef FileName,
1173 for (const auto &Shdr : unwrapOrError(FileName, Obj->sections()))
1174 if (Shdr.sh_addr == Addr && Shdr.sh_size > 0)
1179 template <class ELFO>
1180 static const typename ELFO::Elf_Shdr *
1181 findSectionByName(const ELFO &Obj, StringRef FileName, StringRef Name) {
1182 for (const auto &Shdr : unwrapOrError(FileName, Obj.sections()))
1183 if (Name == unwrapOrError(FileName, Obj.getSectionName(&Shdr)))
1188 static const EnumEntry<unsigned> ElfClass[] = {
1189 {"None", "none", ELF::ELFCLASSNONE},
1190 {"32-bit", "ELF32", ELF::ELFCLASS32},
1191 {"64-bit", "ELF64", ELF::ELFCLASS64},
1194 static const EnumEntry<unsigned> ElfDataEncoding[] = {
1195 {"None", "none", ELF::ELFDATANONE},
1196 {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB},
1197 {"BigEndian", "2's complement, big endian", ELF::ELFDATA2MSB},
1200 static const EnumEntry<unsigned> ElfObjectFileType[] = {
1201 {"None", "NONE (none)", ELF::ET_NONE},
1202 {"Relocatable", "REL (Relocatable file)", ELF::ET_REL},
1203 {"Executable", "EXEC (Executable file)", ELF::ET_EXEC},
1204 {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN},
1205 {"Core", "CORE (Core file)", ELF::ET_CORE},
1208 static const EnumEntry<unsigned> ElfOSABI[] = {
1209 {"SystemV", "UNIX - System V", ELF::ELFOSABI_NONE},
1210 {"HPUX", "UNIX - HP-UX", ELF::ELFOSABI_HPUX},
1211 {"NetBSD", "UNIX - NetBSD", ELF::ELFOSABI_NETBSD},
1212 {"GNU/Linux", "UNIX - GNU", ELF::ELFOSABI_LINUX},
1213 {"GNU/Hurd", "GNU/Hurd", ELF::ELFOSABI_HURD},
1214 {"Solaris", "UNIX - Solaris", ELF::ELFOSABI_SOLARIS},
1215 {"AIX", "UNIX - AIX", ELF::ELFOSABI_AIX},
1216 {"IRIX", "UNIX - IRIX", ELF::ELFOSABI_IRIX},
1217 {"FreeBSD", "UNIX - FreeBSD", ELF::ELFOSABI_FREEBSD},
1218 {"TRU64", "UNIX - TRU64", ELF::ELFOSABI_TRU64},
1219 {"Modesto", "Novell - Modesto", ELF::ELFOSABI_MODESTO},
1220 {"OpenBSD", "UNIX - OpenBSD", ELF::ELFOSABI_OPENBSD},
1221 {"OpenVMS", "VMS - OpenVMS", ELF::ELFOSABI_OPENVMS},
1222 {"NSK", "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK},
1223 {"AROS", "AROS", ELF::ELFOSABI_AROS},
1224 {"FenixOS", "FenixOS", ELF::ELFOSABI_FENIXOS},
1225 {"CloudABI", "CloudABI", ELF::ELFOSABI_CLOUDABI},
1226 {"Standalone", "Standalone App", ELF::ELFOSABI_STANDALONE}
1229 static const EnumEntry<unsigned> SymVersionFlags[] = {
1230 {"Base", "BASE", VER_FLG_BASE},
1231 {"Weak", "WEAK", VER_FLG_WEAK},
1232 {"Info", "INFO", VER_FLG_INFO}};
1234 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
1235 {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA},
1236 {"AMDGPU_PAL", "AMDGPU - PAL", ELF::ELFOSABI_AMDGPU_PAL},
1237 {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D}
1240 static const EnumEntry<unsigned> ARMElfOSABI[] = {
1241 {"ARM", "ARM", ELF::ELFOSABI_ARM}
1244 static const EnumEntry<unsigned> C6000ElfOSABI[] = {
1245 {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
1246 {"C6000_LINUX", "Linux C6000", ELF::ELFOSABI_C6000_LINUX}
1249 static const EnumEntry<unsigned> ElfMachineType[] = {
1250 ENUM_ENT(EM_NONE, "None"),
1251 ENUM_ENT(EM_M32, "WE32100"),
1252 ENUM_ENT(EM_SPARC, "Sparc"),
1253 ENUM_ENT(EM_386, "Intel 80386"),
1254 ENUM_ENT(EM_68K, "MC68000"),
1255 ENUM_ENT(EM_88K, "MC88000"),
1256 ENUM_ENT(EM_IAMCU, "EM_IAMCU"),
1257 ENUM_ENT(EM_860, "Intel 80860"),
1258 ENUM_ENT(EM_MIPS, "MIPS R3000"),
1259 ENUM_ENT(EM_S370, "IBM System/370"),
1260 ENUM_ENT(EM_MIPS_RS3_LE, "MIPS R3000 little-endian"),
1261 ENUM_ENT(EM_PARISC, "HPPA"),
1262 ENUM_ENT(EM_VPP500, "Fujitsu VPP500"),
1263 ENUM_ENT(EM_SPARC32PLUS, "Sparc v8+"),
1264 ENUM_ENT(EM_960, "Intel 80960"),
1265 ENUM_ENT(EM_PPC, "PowerPC"),
1266 ENUM_ENT(EM_PPC64, "PowerPC64"),
1267 ENUM_ENT(EM_S390, "IBM S/390"),
1268 ENUM_ENT(EM_SPU, "SPU"),
1269 ENUM_ENT(EM_V800, "NEC V800 series"),
1270 ENUM_ENT(EM_FR20, "Fujistsu FR20"),
1271 ENUM_ENT(EM_RH32, "TRW RH-32"),
1272 ENUM_ENT(EM_RCE, "Motorola RCE"),
1273 ENUM_ENT(EM_ARM, "ARM"),
1274 ENUM_ENT(EM_ALPHA, "EM_ALPHA"),
1275 ENUM_ENT(EM_SH, "Hitachi SH"),
1276 ENUM_ENT(EM_SPARCV9, "Sparc v9"),
1277 ENUM_ENT(EM_TRICORE, "Siemens Tricore"),
1278 ENUM_ENT(EM_ARC, "ARC"),
1279 ENUM_ENT(EM_H8_300, "Hitachi H8/300"),
1280 ENUM_ENT(EM_H8_300H, "Hitachi H8/300H"),
1281 ENUM_ENT(EM_H8S, "Hitachi H8S"),
1282 ENUM_ENT(EM_H8_500, "Hitachi H8/500"),
1283 ENUM_ENT(EM_IA_64, "Intel IA-64"),
1284 ENUM_ENT(EM_MIPS_X, "Stanford MIPS-X"),
1285 ENUM_ENT(EM_COLDFIRE, "Motorola Coldfire"),
1286 ENUM_ENT(EM_68HC12, "Motorola MC68HC12 Microcontroller"),
1287 ENUM_ENT(EM_MMA, "Fujitsu Multimedia Accelerator"),
1288 ENUM_ENT(EM_PCP, "Siemens PCP"),
1289 ENUM_ENT(EM_NCPU, "Sony nCPU embedded RISC processor"),
1290 ENUM_ENT(EM_NDR1, "Denso NDR1 microprocesspr"),
1291 ENUM_ENT(EM_STARCORE, "Motorola Star*Core processor"),
1292 ENUM_ENT(EM_ME16, "Toyota ME16 processor"),
1293 ENUM_ENT(EM_ST100, "STMicroelectronics ST100 processor"),
1294 ENUM_ENT(EM_TINYJ, "Advanced Logic Corp. TinyJ embedded processor"),
1295 ENUM_ENT(EM_X86_64, "Advanced Micro Devices X86-64"),
1296 ENUM_ENT(EM_PDSP, "Sony DSP processor"),
1297 ENUM_ENT(EM_PDP10, "Digital Equipment Corp. PDP-10"),
1298 ENUM_ENT(EM_PDP11, "Digital Equipment Corp. PDP-11"),
1299 ENUM_ENT(EM_FX66, "Siemens FX66 microcontroller"),
1300 ENUM_ENT(EM_ST9PLUS, "STMicroelectronics ST9+ 8/16 bit microcontroller"),
1301 ENUM_ENT(EM_ST7, "STMicroelectronics ST7 8-bit microcontroller"),
1302 ENUM_ENT(EM_68HC16, "Motorola MC68HC16 Microcontroller"),
1303 ENUM_ENT(EM_68HC11, "Motorola MC68HC11 Microcontroller"),
1304 ENUM_ENT(EM_68HC08, "Motorola MC68HC08 Microcontroller"),
1305 ENUM_ENT(EM_68HC05, "Motorola MC68HC05 Microcontroller"),
1306 ENUM_ENT(EM_SVX, "Silicon Graphics SVx"),
1307 ENUM_ENT(EM_ST19, "STMicroelectronics ST19 8-bit microcontroller"),
1308 ENUM_ENT(EM_VAX, "Digital VAX"),
1309 ENUM_ENT(EM_CRIS, "Axis Communications 32-bit embedded processor"),
1310 ENUM_ENT(EM_JAVELIN, "Infineon Technologies 32-bit embedded cpu"),
1311 ENUM_ENT(EM_FIREPATH, "Element 14 64-bit DSP processor"),
1312 ENUM_ENT(EM_ZSP, "LSI Logic's 16-bit DSP processor"),
1313 ENUM_ENT(EM_MMIX, "Donald Knuth's educational 64-bit processor"),
1314 ENUM_ENT(EM_HUANY, "Harvard Universitys's machine-independent object format"),
1315 ENUM_ENT(EM_PRISM, "Vitesse Prism"),
1316 ENUM_ENT(EM_AVR, "Atmel AVR 8-bit microcontroller"),
1317 ENUM_ENT(EM_FR30, "Fujitsu FR30"),
1318 ENUM_ENT(EM_D10V, "Mitsubishi D10V"),
1319 ENUM_ENT(EM_D30V, "Mitsubishi D30V"),
1320 ENUM_ENT(EM_V850, "NEC v850"),
1321 ENUM_ENT(EM_M32R, "Renesas M32R (formerly Mitsubishi M32r)"),
1322 ENUM_ENT(EM_MN10300, "Matsushita MN10300"),
1323 ENUM_ENT(EM_MN10200, "Matsushita MN10200"),
1324 ENUM_ENT(EM_PJ, "picoJava"),
1325 ENUM_ENT(EM_OPENRISC, "OpenRISC 32-bit embedded processor"),
1326 ENUM_ENT(EM_ARC_COMPACT, "EM_ARC_COMPACT"),
1327 ENUM_ENT(EM_XTENSA, "Tensilica Xtensa Processor"),
1328 ENUM_ENT(EM_VIDEOCORE, "Alphamosaic VideoCore processor"),
1329 ENUM_ENT(EM_TMM_GPP, "Thompson Multimedia General Purpose Processor"),
1330 ENUM_ENT(EM_NS32K, "National Semiconductor 32000 series"),
1331 ENUM_ENT(EM_TPC, "Tenor Network TPC processor"),
1332 ENUM_ENT(EM_SNP1K, "EM_SNP1K"),
1333 ENUM_ENT(EM_ST200, "STMicroelectronics ST200 microcontroller"),
1334 ENUM_ENT(EM_IP2K, "Ubicom IP2xxx 8-bit microcontrollers"),
1335 ENUM_ENT(EM_MAX, "MAX Processor"),
1336 ENUM_ENT(EM_CR, "National Semiconductor CompactRISC"),
1337 ENUM_ENT(EM_F2MC16, "Fujitsu F2MC16"),
1338 ENUM_ENT(EM_MSP430, "Texas Instruments msp430 microcontroller"),
1339 ENUM_ENT(EM_BLACKFIN, "Analog Devices Blackfin"),
1340 ENUM_ENT(EM_SE_C33, "S1C33 Family of Seiko Epson processors"),
1341 ENUM_ENT(EM_SEP, "Sharp embedded microprocessor"),
1342 ENUM_ENT(EM_ARCA, "Arca RISC microprocessor"),
1343 ENUM_ENT(EM_UNICORE, "Unicore"),
1344 ENUM_ENT(EM_EXCESS, "eXcess 16/32/64-bit configurable embedded CPU"),
1345 ENUM_ENT(EM_DXP, "Icera Semiconductor Inc. Deep Execution Processor"),
1346 ENUM_ENT(EM_ALTERA_NIOS2, "Altera Nios"),
1347 ENUM_ENT(EM_CRX, "National Semiconductor CRX microprocessor"),
1348 ENUM_ENT(EM_XGATE, "Motorola XGATE embedded processor"),
1349 ENUM_ENT(EM_C166, "Infineon Technologies xc16x"),
1350 ENUM_ENT(EM_M16C, "Renesas M16C"),
1351 ENUM_ENT(EM_DSPIC30F, "Microchip Technology dsPIC30F Digital Signal Controller"),
1352 ENUM_ENT(EM_CE, "Freescale Communication Engine RISC core"),
1353 ENUM_ENT(EM_M32C, "Renesas M32C"),
1354 ENUM_ENT(EM_TSK3000, "Altium TSK3000 core"),
1355 ENUM_ENT(EM_RS08, "Freescale RS08 embedded processor"),
1356 ENUM_ENT(EM_SHARC, "EM_SHARC"),
1357 ENUM_ENT(EM_ECOG2, "Cyan Technology eCOG2 microprocessor"),
1358 ENUM_ENT(EM_SCORE7, "SUNPLUS S+Core"),
1359 ENUM_ENT(EM_DSP24, "New Japan Radio (NJR) 24-bit DSP Processor"),
1360 ENUM_ENT(EM_VIDEOCORE3, "Broadcom VideoCore III processor"),
1361 ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"),
1362 ENUM_ENT(EM_SE_C17, "Seiko Epson C17 family"),
1363 ENUM_ENT(EM_TI_C6000, "Texas Instruments TMS320C6000 DSP family"),
1364 ENUM_ENT(EM_TI_C2000, "Texas Instruments TMS320C2000 DSP family"),
1365 ENUM_ENT(EM_TI_C5500, "Texas Instruments TMS320C55x DSP family"),
1366 ENUM_ENT(EM_MMDSP_PLUS, "STMicroelectronics 64bit VLIW Data Signal Processor"),
1367 ENUM_ENT(EM_CYPRESS_M8C, "Cypress M8C microprocessor"),
1368 ENUM_ENT(EM_R32C, "Renesas R32C series microprocessors"),
1369 ENUM_ENT(EM_TRIMEDIA, "NXP Semiconductors TriMedia architecture family"),
1370 ENUM_ENT(EM_HEXAGON, "Qualcomm Hexagon"),
1371 ENUM_ENT(EM_8051, "Intel 8051 and variants"),
1372 ENUM_ENT(EM_STXP7X, "STMicroelectronics STxP7x family"),
1373 ENUM_ENT(EM_NDS32, "Andes Technology compact code size embedded RISC processor family"),
1374 ENUM_ENT(EM_ECOG1, "Cyan Technology eCOG1 microprocessor"),
1375 ENUM_ENT(EM_ECOG1X, "Cyan Technology eCOG1X family"),
1376 ENUM_ENT(EM_MAXQ30, "Dallas Semiconductor MAXQ30 Core microcontrollers"),
1377 ENUM_ENT(EM_XIMO16, "New Japan Radio (NJR) 16-bit DSP Processor"),
1378 ENUM_ENT(EM_MANIK, "M2000 Reconfigurable RISC Microprocessor"),
1379 ENUM_ENT(EM_CRAYNV2, "Cray Inc. NV2 vector architecture"),
1380 ENUM_ENT(EM_RX, "Renesas RX"),
1381 ENUM_ENT(EM_METAG, "Imagination Technologies Meta processor architecture"),
1382 ENUM_ENT(EM_MCST_ELBRUS, "MCST Elbrus general purpose hardware architecture"),
1383 ENUM_ENT(EM_ECOG16, "Cyan Technology eCOG16 family"),
1384 ENUM_ENT(EM_CR16, "Xilinx MicroBlaze"),
1385 ENUM_ENT(EM_ETPU, "Freescale Extended Time Processing Unit"),
1386 ENUM_ENT(EM_SLE9X, "Infineon Technologies SLE9X core"),
1387 ENUM_ENT(EM_L10M, "EM_L10M"),
1388 ENUM_ENT(EM_K10M, "EM_K10M"),
1389 ENUM_ENT(EM_AARCH64, "AArch64"),
1390 ENUM_ENT(EM_AVR32, "Atmel Corporation 32-bit microprocessor family"),
1391 ENUM_ENT(EM_STM8, "STMicroeletronics STM8 8-bit microcontroller"),
1392 ENUM_ENT(EM_TILE64, "Tilera TILE64 multicore architecture family"),
1393 ENUM_ENT(EM_TILEPRO, "Tilera TILEPro multicore architecture family"),
1394 ENUM_ENT(EM_CUDA, "NVIDIA CUDA architecture"),
1395 ENUM_ENT(EM_TILEGX, "Tilera TILE-Gx multicore architecture family"),
1396 ENUM_ENT(EM_CLOUDSHIELD, "EM_CLOUDSHIELD"),
1397 ENUM_ENT(EM_COREA_1ST, "EM_COREA_1ST"),
1398 ENUM_ENT(EM_COREA_2ND, "EM_COREA_2ND"),
1399 ENUM_ENT(EM_ARC_COMPACT2, "EM_ARC_COMPACT2"),
1400 ENUM_ENT(EM_OPEN8, "EM_OPEN8"),
1401 ENUM_ENT(EM_RL78, "Renesas RL78"),
1402 ENUM_ENT(EM_VIDEOCORE5, "Broadcom VideoCore V processor"),
1403 ENUM_ENT(EM_78KOR, "EM_78KOR"),
1404 ENUM_ENT(EM_56800EX, "EM_56800EX"),
1405 ENUM_ENT(EM_AMDGPU, "EM_AMDGPU"),
1406 ENUM_ENT(EM_RISCV, "RISC-V"),
1407 ENUM_ENT(EM_LANAI, "EM_LANAI"),
1408 ENUM_ENT(EM_BPF, "EM_BPF"),
1411 static const EnumEntry<unsigned> ElfSymbolBindings[] = {
1412 {"Local", "LOCAL", ELF::STB_LOCAL},
1413 {"Global", "GLOBAL", ELF::STB_GLOBAL},
1414 {"Weak", "WEAK", ELF::STB_WEAK},
1415 {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}};
1417 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = {
1418 {"DEFAULT", "DEFAULT", ELF::STV_DEFAULT},
1419 {"INTERNAL", "INTERNAL", ELF::STV_INTERNAL},
1420 {"HIDDEN", "HIDDEN", ELF::STV_HIDDEN},
1421 {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}};
1423 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = {
1424 { "AMDGPU_HSA_KERNEL", ELF::STT_AMDGPU_HSA_KERNEL }
1427 static const char *getGroupType(uint32_t Flag) {
1428 if (Flag & ELF::GRP_COMDAT)
1434 static const EnumEntry<unsigned> ElfSectionFlags[] = {
1435 ENUM_ENT(SHF_WRITE, "W"),
1436 ENUM_ENT(SHF_ALLOC, "A"),
1437 ENUM_ENT(SHF_EXECINSTR, "X"),
1438 ENUM_ENT(SHF_MERGE, "M"),
1439 ENUM_ENT(SHF_STRINGS, "S"),
1440 ENUM_ENT(SHF_INFO_LINK, "I"),
1441 ENUM_ENT(SHF_LINK_ORDER, "L"),
1442 ENUM_ENT(SHF_OS_NONCONFORMING, "O"),
1443 ENUM_ENT(SHF_GROUP, "G"),
1444 ENUM_ENT(SHF_TLS, "T"),
1445 ENUM_ENT(SHF_COMPRESSED, "C"),
1446 ENUM_ENT(SHF_EXCLUDE, "E"),
1449 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = {
1450 ENUM_ENT(XCORE_SHF_CP_SECTION, ""),
1451 ENUM_ENT(XCORE_SHF_DP_SECTION, "")
1454 static const EnumEntry<unsigned> ElfARMSectionFlags[] = {
1455 ENUM_ENT(SHF_ARM_PURECODE, "y")
1458 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = {
1459 ENUM_ENT(SHF_HEX_GPREL, "")
1462 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = {
1463 ENUM_ENT(SHF_MIPS_NODUPES, ""),
1464 ENUM_ENT(SHF_MIPS_NAMES, ""),
1465 ENUM_ENT(SHF_MIPS_LOCAL, ""),
1466 ENUM_ENT(SHF_MIPS_NOSTRIP, ""),
1467 ENUM_ENT(SHF_MIPS_GPREL, ""),
1468 ENUM_ENT(SHF_MIPS_MERGE, ""),
1469 ENUM_ENT(SHF_MIPS_ADDR, ""),
1470 ENUM_ENT(SHF_MIPS_STRING, "")
1473 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = {
1474 ENUM_ENT(SHF_X86_64_LARGE, "l")
1477 static std::vector<EnumEntry<unsigned>>
1478 getSectionFlagsForTarget(unsigned EMachine) {
1479 std::vector<EnumEntry<unsigned>> Ret(std::begin(ElfSectionFlags),
1480 std::end(ElfSectionFlags));
1483 Ret.insert(Ret.end(), std::begin(ElfARMSectionFlags),
1484 std::end(ElfARMSectionFlags));
1487 Ret.insert(Ret.end(), std::begin(ElfHexagonSectionFlags),
1488 std::end(ElfHexagonSectionFlags));
1491 Ret.insert(Ret.end(), std::begin(ElfMipsSectionFlags),
1492 std::end(ElfMipsSectionFlags));
1495 Ret.insert(Ret.end(), std::begin(ElfX86_64SectionFlags),
1496 std::end(ElfX86_64SectionFlags));
1499 Ret.insert(Ret.end(), std::begin(ElfXCoreSectionFlags),
1500 std::end(ElfXCoreSectionFlags));
1508 static std::string getGNUFlags(unsigned EMachine, uint64_t Flags) {
1509 // Here we are trying to build the flags string in the same way as GNU does.
1510 // It is not that straightforward. Imagine we have sh_flags == 0x90000000.
1511 // SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000.
1512 // GNU readelf will not print "E" or "Ep" in this case, but will print just
1513 // "p". It only will print "E" when no other processor flag is set.
1515 bool HasUnknownFlag = false;
1516 bool HasOSFlag = false;
1517 bool HasProcFlag = false;
1518 std::vector<EnumEntry<unsigned>> FlagsList =
1519 getSectionFlagsForTarget(EMachine);
1521 // Take the least significant bit as a flag.
1522 uint64_t Flag = Flags & -Flags;
1525 // Find the flag in the known flags list.
1526 auto I = llvm::find_if(FlagsList, [=](const EnumEntry<unsigned> &E) {
1527 // Flags with empty names are not printed in GNU style output.
1528 return E.Value == Flag && !E.AltName.empty();
1530 if (I != FlagsList.end()) {
1535 // If we did not find a matching regular flag, then we deal with an OS
1536 // specific flag, processor specific flag or an unknown flag.
1537 if (Flag & ELF::SHF_MASKOS) {
1539 Flags &= ~ELF::SHF_MASKOS;
1540 } else if (Flag & ELF::SHF_MASKPROC) {
1542 // Mask off all the processor-specific bits. This removes the SHF_EXCLUDE
1543 // bit if set so that it doesn't also get printed.
1544 Flags &= ~ELF::SHF_MASKPROC;
1546 HasUnknownFlag = true;
1550 // "o", "p" and "x" are printed last.
1560 static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
1561 // Check potentially overlapped processor-specific
1562 // program header type.
1565 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); }
1568 case ELF::EM_MIPS_RS3_LE:
1570 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
1571 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
1572 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
1573 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS);
1579 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL );
1580 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD );
1581 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
1582 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
1583 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE );
1584 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB );
1585 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR );
1586 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS );
1588 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
1589 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
1591 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
1592 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
1593 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_PROPERTY);
1595 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE);
1596 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED);
1597 LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA);
1604 static std::string getElfPtType(unsigned Arch, unsigned Type) {
1606 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL)
1607 LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD)
1608 LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC)
1609 LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP)
1610 LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE)
1611 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB)
1612 LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR)
1613 LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS)
1614 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME)
1615 LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND)
1616 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK)
1617 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO)
1618 LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_PROPERTY)
1620 // All machine specific PT_* types
1623 if (Type == ELF::PT_ARM_EXIDX)
1627 case ELF::EM_MIPS_RS3_LE:
1629 case PT_MIPS_REGINFO:
1631 case PT_MIPS_RTPROC:
1633 case PT_MIPS_OPTIONS:
1635 case PT_MIPS_ABIFLAGS:
1641 return std::string("<unknown>: ") + to_string(format_hex(Type, 1));
1644 static const EnumEntry<unsigned> ElfSegmentFlags[] = {
1645 LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
1646 LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
1647 LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
1650 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
1651 ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"),
1652 ENUM_ENT(EF_MIPS_PIC, "pic"),
1653 ENUM_ENT(EF_MIPS_CPIC, "cpic"),
1654 ENUM_ENT(EF_MIPS_ABI2, "abi2"),
1655 ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"),
1656 ENUM_ENT(EF_MIPS_FP64, "fp64"),
1657 ENUM_ENT(EF_MIPS_NAN2008, "nan2008"),
1658 ENUM_ENT(EF_MIPS_ABI_O32, "o32"),
1659 ENUM_ENT(EF_MIPS_ABI_O64, "o64"),
1660 ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"),
1661 ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"),
1662 ENUM_ENT(EF_MIPS_MACH_3900, "3900"),
1663 ENUM_ENT(EF_MIPS_MACH_4010, "4010"),
1664 ENUM_ENT(EF_MIPS_MACH_4100, "4100"),
1665 ENUM_ENT(EF_MIPS_MACH_4650, "4650"),
1666 ENUM_ENT(EF_MIPS_MACH_4120, "4120"),
1667 ENUM_ENT(EF_MIPS_MACH_4111, "4111"),
1668 ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"),
1669 ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"),
1670 ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"),
1671 ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"),
1672 ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"),
1673 ENUM_ENT(EF_MIPS_MACH_5400, "5400"),
1674 ENUM_ENT(EF_MIPS_MACH_5900, "5900"),
1675 ENUM_ENT(EF_MIPS_MACH_5500, "5500"),
1676 ENUM_ENT(EF_MIPS_MACH_9000, "9000"),
1677 ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"),
1678 ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"),
1679 ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"),
1680 ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"),
1681 ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"),
1682 ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"),
1683 ENUM_ENT(EF_MIPS_ARCH_1, "mips1"),
1684 ENUM_ENT(EF_MIPS_ARCH_2, "mips2"),
1685 ENUM_ENT(EF_MIPS_ARCH_3, "mips3"),
1686 ENUM_ENT(EF_MIPS_ARCH_4, "mips4"),
1687 ENUM_ENT(EF_MIPS_ARCH_5, "mips5"),
1688 ENUM_ENT(EF_MIPS_ARCH_32, "mips32"),
1689 ENUM_ENT(EF_MIPS_ARCH_64, "mips64"),
1690 ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"),
1691 ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"),
1692 ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"),
1693 ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6")
1696 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = {
1697 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE),
1698 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600),
1699 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630),
1700 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880),
1701 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670),
1702 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710),
1703 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730),
1704 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770),
1705 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR),
1706 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS),
1707 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER),
1708 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD),
1709 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO),
1710 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS),
1711 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS),
1712 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN),
1713 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS),
1714 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600),
1715 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601),
1716 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700),
1717 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701),
1718 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702),
1719 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703),
1720 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704),
1721 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801),
1722 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802),
1723 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803),
1724 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810),
1725 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900),
1726 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902),
1727 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904),
1728 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906),
1729 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908),
1730 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909),
1731 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010),
1732 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011),
1733 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012),
1734 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK),
1735 LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC)
1738 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = {
1739 ENUM_ENT(EF_RISCV_RVC, "RVC"),
1740 ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"),
1741 ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"),
1742 ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"),
1743 ENUM_ENT(EF_RISCV_RVE, "RVE")
1746 static const EnumEntry<unsigned> ElfSymOtherFlags[] = {
1747 LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL),
1748 LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN),
1749 LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED)
1752 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = {
1753 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
1754 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
1755 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC),
1756 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS)
1759 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = {
1760 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
1761 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
1762 LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16)
1765 static const char *getElfMipsOptionsOdkType(unsigned Odk) {
1767 LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL);
1768 LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO);
1769 LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS);
1770 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD);
1771 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH);
1772 LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL);
1773 LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS);
1774 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND);
1775 LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR);
1776 LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP);
1777 LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT);
1778 LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE);
1784 template <typename ELFT>
1785 std::pair<const typename ELFT::Phdr *, const typename ELFT::Shdr *>
1786 ELFDumper<ELFT>::findDynamic(const ELFFile<ELFT> *Obj) {
1787 // Try to locate the PT_DYNAMIC header.
1788 const Elf_Phdr *DynamicPhdr = nullptr;
1789 for (const Elf_Phdr &Phdr :
1790 unwrapOrError(ObjF->getFileName(), Obj->program_headers())) {
1791 if (Phdr.p_type != ELF::PT_DYNAMIC)
1793 DynamicPhdr = &Phdr;
1797 // Try to locate the .dynamic section in the sections header table.
1798 const Elf_Shdr *DynamicSec = nullptr;
1799 for (const Elf_Shdr &Sec :
1800 unwrapOrError(ObjF->getFileName(), Obj->sections())) {
1801 if (Sec.sh_type != ELF::SHT_DYNAMIC)
1807 if (DynamicPhdr && DynamicPhdr->p_offset + DynamicPhdr->p_filesz >
1808 ObjF->getMemoryBufferRef().getBufferSize()) {
1811 "PT_DYNAMIC segment offset + size exceeds the size of the file"),
1812 ObjF->getFileName());
1813 // Don't use the broken dynamic header.
1814 DynamicPhdr = nullptr;
1817 if (DynamicPhdr && DynamicSec) {
1819 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(DynamicSec));
1820 if (DynamicSec->sh_addr + DynamicSec->sh_size >
1821 DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz ||
1822 DynamicSec->sh_addr < DynamicPhdr->p_vaddr)
1823 reportWarning(createError("The SHT_DYNAMIC section '" + Name +
1824 "' is not contained within the "
1825 "PT_DYNAMIC segment"),
1826 ObjF->getFileName());
1828 if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
1829 reportWarning(createError("The SHT_DYNAMIC section '" + Name +
1830 "' is not at the start of "
1831 "PT_DYNAMIC segment"),
1832 ObjF->getFileName());
1835 return std::make_pair(DynamicPhdr, DynamicSec);
1838 template <typename ELFT>
1839 void ELFDumper<ELFT>::loadDynamicTable(const ELFFile<ELFT> *Obj) {
1840 const Elf_Phdr *DynamicPhdr;
1841 const Elf_Shdr *DynamicSec;
1842 std::tie(DynamicPhdr, DynamicSec) = findDynamic(Obj);
1843 if (!DynamicPhdr && !DynamicSec)
1846 DynRegionInfo FromPhdr(ObjF->getFileName());
1847 bool IsPhdrTableValid = false;
1849 FromPhdr = createDRIFrom(DynamicPhdr, sizeof(Elf_Dyn));
1850 IsPhdrTableValid = !FromPhdr.getAsArrayRef<Elf_Dyn>().empty();
1853 // Locate the dynamic table described in a section header.
1854 // Ignore sh_entsize and use the expected value for entry size explicitly.
1855 // This allows us to dump dynamic sections with a broken sh_entsize
1857 DynRegionInfo FromSec(ObjF->getFileName());
1858 bool IsSecTableValid = false;
1861 checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset,
1862 DynamicSec->sh_size, sizeof(Elf_Dyn), ObjF->getFileName()});
1863 IsSecTableValid = !FromSec.getAsArrayRef<Elf_Dyn>().empty();
1866 // When we only have information from one of the SHT_DYNAMIC section header or
1867 // PT_DYNAMIC program header, just use that.
1868 if (!DynamicPhdr || !DynamicSec) {
1869 if ((DynamicPhdr && IsPhdrTableValid) || (DynamicSec && IsSecTableValid)) {
1870 DynamicTable = DynamicPhdr ? FromPhdr : FromSec;
1871 parseDynamicTable(Obj);
1873 reportWarning(createError("no valid dynamic table was found"),
1874 ObjF->getFileName());
1879 // At this point we have tables found from the section header and from the
1880 // dynamic segment. Usually they match, but we have to do sanity checks to
1883 if (FromPhdr.Addr != FromSec.Addr)
1884 reportWarning(createError("SHT_DYNAMIC section header and PT_DYNAMIC "
1885 "program header disagree about "
1886 "the location of the dynamic table"),
1887 ObjF->getFileName());
1889 if (!IsPhdrTableValid && !IsSecTableValid) {
1890 reportWarning(createError("no valid dynamic table was found"),
1891 ObjF->getFileName());
1895 // Information in the PT_DYNAMIC program header has priority over the information
1896 // in a section header.
1897 if (IsPhdrTableValid) {
1898 if (!IsSecTableValid)
1901 "SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used"),
1902 ObjF->getFileName());
1903 DynamicTable = FromPhdr;
1907 "PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used"),
1908 ObjF->getFileName());
1909 DynamicTable = FromSec;
1912 parseDynamicTable(Obj);
1915 template <typename ELFT>
1916 ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> *ObjF,
1917 ScopedPrinter &Writer)
1918 : ObjDumper(Writer), ObjF(ObjF), DynRelRegion(ObjF->getFileName()),
1919 DynRelaRegion(ObjF->getFileName()), DynRelrRegion(ObjF->getFileName()),
1920 DynPLTRelRegion(ObjF->getFileName()), DynSymRegion(ObjF->getFileName()),
1921 DynamicTable(ObjF->getFileName()) {
1922 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
1923 for (const Elf_Shdr &Sec :
1924 unwrapOrError(ObjF->getFileName(), Obj->sections())) {
1925 switch (Sec.sh_type) {
1926 case ELF::SHT_SYMTAB:
1928 DotSymtabSec = &Sec;
1930 case ELF::SHT_DYNSYM:
1931 if (!DynSymRegion.Size) {
1932 DynSymRegion = createDRIFrom(&Sec);
1933 // This is only used (if Elf_Shdr present)for naming section in GNU
1936 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec));
1938 if (Expected<StringRef> E = Obj->getStringTableForSymtab(Sec))
1939 DynamicStringTable = *E;
1941 reportWarning(E.takeError(), ObjF->getFileName());
1944 case ELF::SHT_SYMTAB_SHNDX:
1945 ShndxTable = unwrapOrError(ObjF->getFileName(), Obj->getSHNDXTable(Sec));
1947 case ELF::SHT_GNU_versym:
1948 if (!SymbolVersionSection)
1949 SymbolVersionSection = &Sec;
1951 case ELF::SHT_GNU_verdef:
1952 if (!SymbolVersionDefSection)
1953 SymbolVersionDefSection = &Sec;
1955 case ELF::SHT_GNU_verneed:
1956 if (!SymbolVersionNeedSection)
1957 SymbolVersionNeedSection = &Sec;
1959 case ELF::SHT_LLVM_CALL_GRAPH_PROFILE:
1960 if (!DotCGProfileSec)
1961 DotCGProfileSec = &Sec;
1963 case ELF::SHT_LLVM_ADDRSIG:
1965 DotAddrsigSec = &Sec;
1970 loadDynamicTable(Obj);
1972 if (opts::Output == opts::GNU)
1973 ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this));
1975 ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this));
1978 template <typename ELFT>
1979 void ELFDumper<ELFT>::parseDynamicTable(const ELFFile<ELFT> *Obj) {
1980 auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * {
1981 auto MappedAddrOrError = ObjF->getELFFile()->toMappedAddr(VAddr);
1982 if (!MappedAddrOrError) {
1984 createError("Unable to parse DT_" + Obj->getDynamicTagAsString(Tag) +
1985 ": " + llvm::toString(MappedAddrOrError.takeError()));
1987 reportWarning(std::move(Err), ObjF->getFileName());
1990 return MappedAddrOrError.get();
1993 uint64_t SONameOffset = 0;
1994 const char *StringTableBegin = nullptr;
1995 uint64_t StringTableSize = 0;
1996 for (const Elf_Dyn &Dyn : dynamic_table()) {
1997 switch (Dyn.d_tag) {
1999 HashTable = reinterpret_cast<const Elf_Hash *>(
2000 toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
2002 case ELF::DT_GNU_HASH:
2003 GnuHashTable = reinterpret_cast<const Elf_GnuHash *>(
2004 toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
2006 case ELF::DT_STRTAB:
2007 StringTableBegin = reinterpret_cast<const char *>(
2008 toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
2011 StringTableSize = Dyn.getVal();
2013 case ELF::DT_SYMTAB: {
2014 // Often we find the information about the dynamic symbol table
2015 // location in the SHT_DYNSYM section header. However, the value in
2016 // DT_SYMTAB has priority, because it is used by dynamic loaders to
2017 // locate .dynsym at runtime. The location we find in the section header
2018 // and the location we find here should match. If we can't map the
2019 // DT_SYMTAB value to an address (e.g. when there are no program headers), we
2020 // ignore its value.
2021 if (const uint8_t *VA = toMappedAddr(Dyn.getTag(), Dyn.getPtr())) {
2022 // EntSize is non-zero if the dynamic symbol table has been found via a
2024 if (DynSymRegion.EntSize && VA != DynSymRegion.Addr)
2027 "SHT_DYNSYM section header and DT_SYMTAB disagree about "
2028 "the location of the dynamic symbol table"),
2029 ObjF->getFileName());
2031 DynSymRegion.Addr = VA;
2032 DynSymRegion.EntSize = sizeof(Elf_Sym);
2037 DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
2039 case ELF::DT_RELASZ:
2040 DynRelaRegion.Size = Dyn.getVal();
2042 case ELF::DT_RELAENT:
2043 DynRelaRegion.EntSize = Dyn.getVal();
2045 case ELF::DT_SONAME:
2046 SONameOffset = Dyn.getVal();
2049 DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
2052 DynRelRegion.Size = Dyn.getVal();
2054 case ELF::DT_RELENT:
2055 DynRelRegion.EntSize = Dyn.getVal();
2058 case ELF::DT_ANDROID_RELR:
2059 DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
2061 case ELF::DT_RELRSZ:
2062 case ELF::DT_ANDROID_RELRSZ:
2063 DynRelrRegion.Size = Dyn.getVal();
2065 case ELF::DT_RELRENT:
2066 case ELF::DT_ANDROID_RELRENT:
2067 DynRelrRegion.EntSize = Dyn.getVal();
2069 case ELF::DT_PLTREL:
2070 if (Dyn.getVal() == DT_REL)
2071 DynPLTRelRegion.EntSize = sizeof(Elf_Rel);
2072 else if (Dyn.getVal() == DT_RELA)
2073 DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
2075 reportError(createError(Twine("unknown DT_PLTREL value of ") +
2076 Twine((uint64_t)Dyn.getVal())),
2077 ObjF->getFileName());
2079 case ELF::DT_JMPREL:
2080 DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
2082 case ELF::DT_PLTRELSZ:
2083 DynPLTRelRegion.Size = Dyn.getVal();
2087 if (StringTableBegin)
2088 DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
2089 SOName = getDynamicString(SONameOffset);
2092 template <typename ELFT>
2093 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const {
2094 return DynRelRegion.getAsArrayRef<Elf_Rel>();
2097 template <typename ELFT>
2098 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const {
2099 return DynRelaRegion.getAsArrayRef<Elf_Rela>();
2102 template <typename ELFT>
2103 typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const {
2104 return DynRelrRegion.getAsArrayRef<Elf_Relr>();
2107 template <class ELFT> void ELFDumper<ELFT>::printFileHeaders() {
2108 ELFDumperStyle->printFileHeaders(ObjF->getELFFile());
2111 template <class ELFT> void ELFDumper<ELFT>::printSectionHeaders() {
2112 ELFDumperStyle->printSectionHeaders(ObjF->getELFFile());
2115 template <class ELFT> void ELFDumper<ELFT>::printRelocations() {
2116 ELFDumperStyle->printRelocations(ObjF->getELFFile());
2119 template <class ELFT>
2120 void ELFDumper<ELFT>::printProgramHeaders(
2121 bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
2122 ELFDumperStyle->printProgramHeaders(ObjF->getELFFile(), PrintProgramHeaders,
2123 PrintSectionMapping);
2126 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() {
2127 // Dump version symbol section.
2128 ELFDumperStyle->printVersionSymbolSection(ObjF->getELFFile(),
2129 SymbolVersionSection);
2131 // Dump version definition section.
2132 ELFDumperStyle->printVersionDefinitionSection(ObjF->getELFFile(),
2133 SymbolVersionDefSection);
2135 // Dump version dependency section.
2136 ELFDumperStyle->printVersionDependencySection(ObjF->getELFFile(),
2137 SymbolVersionNeedSection);
2140 template <class ELFT> void ELFDumper<ELFT>::printDependentLibs() {
2141 ELFDumperStyle->printDependentLibs(ObjF->getELFFile());
2144 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() {
2145 ELFDumperStyle->printDynamicRelocations(ObjF->getELFFile());
2148 template <class ELFT>
2149 void ELFDumper<ELFT>::printSymbols(bool PrintSymbols,
2150 bool PrintDynamicSymbols) {
2151 ELFDumperStyle->printSymbols(ObjF->getELFFile(), PrintSymbols,
2152 PrintDynamicSymbols);
2155 template <class ELFT> void ELFDumper<ELFT>::printHashSymbols() {
2156 ELFDumperStyle->printHashSymbols(ObjF->getELFFile());
2159 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() {
2160 ELFDumperStyle->printHashHistogram(ObjF->getELFFile());
2163 template <class ELFT> void ELFDumper<ELFT>::printCGProfile() {
2164 ELFDumperStyle->printCGProfile(ObjF->getELFFile());
2167 template <class ELFT> void ELFDumper<ELFT>::printNotes() {
2168 ELFDumperStyle->printNotes(ObjF->getELFFile());
2171 template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() {
2172 ELFDumperStyle->printELFLinkerOptions(ObjF->getELFFile());
2175 template <class ELFT> void ELFDumper<ELFT>::printStackSizes() {
2176 ELFDumperStyle->printStackSizes(ObjF);
2179 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \
2180 { #enum, prefix##_##enum }
2182 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = {
2183 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN),
2184 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC),
2185 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL),
2186 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW),
2187 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS)
2190 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = {
2191 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW),
2192 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL),
2193 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP),
2194 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE),
2195 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR),
2196 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST),
2197 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN),
2198 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN),
2199 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT),
2200 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS),
2201 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE),
2202 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB),
2203 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP),
2204 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT),
2205 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE),
2206 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE),
2207 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND),
2208 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT),
2209 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF),
2210 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS),
2211 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR),
2212 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED),
2213 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC),
2214 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE),
2215 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT),
2216 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON),
2217 LLVM_READOBJ_DT_FLAG_ENT(DF_1, PIE),
2220 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = {
2221 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE),
2222 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART),
2223 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT),
2224 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT),
2225 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE),
2226 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY),
2227 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT),
2228 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS),
2229 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT),
2230 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE),
2231 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD),
2232 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART),
2233 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED),
2234 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD),
2235 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF),
2236 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE)
2239 #undef LLVM_READOBJ_DT_FLAG_ENT
2241 template <typename T, typename TFlag>
2242 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) {
2243 using FlagEntry = EnumEntry<TFlag>;
2244 using FlagVector = SmallVector<FlagEntry, 10>;
2245 FlagVector SetFlags;
2247 for (const auto &Flag : Flags) {
2248 if (Flag.Value == 0)
2251 if ((Value & Flag.Value) == Flag.Value)
2252 SetFlags.push_back(Flag);
2255 for (const auto &Flag : SetFlags) {
2256 OS << Flag.Name << " ";
2260 template <class ELFT>
2261 void ELFDumper<ELFT>::printDynamicEntry(raw_ostream &OS, uint64_t Type,
2262 uint64_t Value) const {
2263 const char *ConvChar =
2264 (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64;
2266 // Handle custom printing of architecture specific tags
2267 switch (ObjF->getELFFile()->getHeader()->e_machine) {
2270 case DT_AARCH64_BTI_PLT:
2271 case DT_AARCH64_PAC_PLT:
2280 case DT_HEXAGON_VER:
2283 case DT_HEXAGON_SYMSZ:
2284 case DT_HEXAGON_PLT:
2285 OS << format(ConvChar, Value);
2293 case DT_MIPS_RLD_VERSION:
2294 case DT_MIPS_LOCAL_GOTNO:
2295 case DT_MIPS_SYMTABNO:
2296 case DT_MIPS_UNREFEXTNO:
2299 case DT_MIPS_TIME_STAMP:
2300 case DT_MIPS_ICHECKSUM:
2301 case DT_MIPS_IVERSION:
2302 case DT_MIPS_BASE_ADDRESS:
2304 case DT_MIPS_CONFLICT:
2305 case DT_MIPS_LIBLIST:
2306 case DT_MIPS_CONFLICTNO:
2307 case DT_MIPS_LIBLISTNO:
2308 case DT_MIPS_GOTSYM:
2309 case DT_MIPS_HIPAGENO:
2310 case DT_MIPS_RLD_MAP:
2311 case DT_MIPS_DELTA_CLASS:
2312 case DT_MIPS_DELTA_CLASS_NO:
2313 case DT_MIPS_DELTA_INSTANCE:
2314 case DT_MIPS_DELTA_RELOC:
2315 case DT_MIPS_DELTA_RELOC_NO:
2316 case DT_MIPS_DELTA_SYM:
2317 case DT_MIPS_DELTA_SYM_NO:
2318 case DT_MIPS_DELTA_CLASSSYM:
2319 case DT_MIPS_DELTA_CLASSSYM_NO:
2320 case DT_MIPS_CXX_FLAGS:
2321 case DT_MIPS_PIXIE_INIT:
2322 case DT_MIPS_SYMBOL_LIB:
2323 case DT_MIPS_LOCALPAGE_GOTIDX:
2324 case DT_MIPS_LOCAL_GOTIDX:
2325 case DT_MIPS_HIDDEN_GOTIDX:
2326 case DT_MIPS_PROTECTED_GOTIDX:
2327 case DT_MIPS_OPTIONS:
2328 case DT_MIPS_INTERFACE:
2329 case DT_MIPS_DYNSTR_ALIGN:
2330 case DT_MIPS_INTERFACE_SIZE:
2331 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
2332 case DT_MIPS_PERF_SUFFIX:
2333 case DT_MIPS_COMPACT_SIZE:
2334 case DT_MIPS_GP_VALUE:
2335 case DT_MIPS_AUX_DYNAMIC:
2336 case DT_MIPS_PLTGOT:
2338 case DT_MIPS_RLD_MAP_REL:
2339 OS << format(ConvChar, Value);
2342 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
2354 if (Value == DT_REL) {
2357 } else if (Value == DT_RELA) {
2373 case DT_PREINIT_ARRAY:
2380 OS << format(ConvChar, Value);
2395 case DT_INIT_ARRAYSZ:
2396 case DT_FINI_ARRAYSZ:
2397 case DT_PREINIT_ARRAYSZ:
2398 case DT_ANDROID_RELSZ:
2399 case DT_ANDROID_RELASZ:
2400 OS << Value << " (bytes)";
2409 const std::map<uint64_t, const char*> TagNames = {
2410 {DT_NEEDED, "Shared library"},
2411 {DT_SONAME, "Library soname"},
2412 {DT_AUXILIARY, "Auxiliary library"},
2413 {DT_USED, "Not needed object"},
2414 {DT_FILTER, "Filter library"},
2415 {DT_RPATH, "Library rpath"},
2416 {DT_RUNPATH, "Library runpath"},
2418 OS << TagNames.at(Type) << ": [" << getDynamicString(Value) << "]";
2422 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
2425 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS);
2428 OS << format(ConvChar, Value);
2433 template <class ELFT>
2434 std::string ELFDumper<ELFT>::getDynamicString(uint64_t Value) const {
2435 if (DynamicStringTable.empty())
2436 return "<String table is empty or was not found>";
2437 if (Value < DynamicStringTable.size())
2438 return DynamicStringTable.data() + Value;
2439 return Twine("<Invalid offset 0x" + utohexstr(Value) + ">").str();
2442 template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() {
2443 DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF);
2444 Ctx.printUnwindInformation();
2449 template <> void ELFDumper<ELF32LE>::printUnwindInfo() {
2450 const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
2451 const unsigned Machine = Obj->getHeader()->e_machine;
2452 if (Machine == EM_ARM) {
2453 ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF->getFileName(),
2455 Ctx.PrintUnwindInformation();
2457 DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF);
2458 Ctx.printUnwindInformation();
2461 } // end anonymous namespace
2463 template <class ELFT> void ELFDumper<ELFT>::printDynamicTable() {
2464 ELFDumperStyle->printDynamic(ObjF->getELFFile());
2467 template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() {
2468 ListScope D(W, "NeededLibraries");
2470 std::vector<std::string> Libs;
2471 for (const auto &Entry : dynamic_table())
2472 if (Entry.d_tag == ELF::DT_NEEDED)
2473 Libs.push_back(getDynamicString(Entry.d_un.d_val));
2475 llvm::stable_sort(Libs);
2477 for (const auto &L : Libs)
2478 W.startLine() << L << "\n";
2481 template <typename ELFT> void ELFDumper<ELFT>::printHashTable() {
2482 DictScope D(W, "HashTable");
2485 W.printNumber("Num Buckets", HashTable->nbucket);
2486 W.printNumber("Num Chains", HashTable->nchain);
2487 W.printList("Buckets", HashTable->buckets());
2488 W.printList("Chains", HashTable->chains());
2491 template <typename ELFT> void ELFDumper<ELFT>::printGnuHashTable() {
2492 DictScope D(W, "GnuHashTable");
2495 W.printNumber("Num Buckets", GnuHashTable->nbuckets);
2496 W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx);
2497 W.printNumber("Num Mask Words", GnuHashTable->maskwords);
2498 W.printNumber("Shift Count", GnuHashTable->shift2);
2499 W.printHexList("Bloom Filter", GnuHashTable->filter());
2500 W.printList("Buckets", GnuHashTable->buckets());
2501 Elf_Sym_Range Syms = dynamic_symbols();
2502 unsigned NumSyms = std::distance(Syms.begin(), Syms.end());
2504 reportError(createError("No dynamic symbol section"), ObjF->getFileName());
2505 W.printHexList("Values", GnuHashTable->values(NumSyms));
2508 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
2509 W.printString("LoadName", SOName);
2512 template <class ELFT> void ELFDumper<ELFT>::printArchSpecificInfo() {
2513 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2514 switch (Obj->getHeader()->e_machine) {
2519 ELFDumperStyle->printMipsABIFlags(ObjF);
2523 MipsGOTParser<ELFT> Parser(Obj, ObjF->getFileName(), dynamic_table(),
2525 if (Parser.hasGot())
2526 ELFDumperStyle->printMipsGOT(Parser);
2527 if (Parser.hasPlt())
2528 ELFDumperStyle->printMipsPLT(Parser);
2536 template <class ELFT> void ELFDumper<ELFT>::printAttributes() {
2537 W.startLine() << "Attributes not implemented.\n";
2542 template <> void ELFDumper<ELF32LE>::printAttributes() {
2543 const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
2544 if (Obj->getHeader()->e_machine != EM_ARM) {
2545 W.startLine() << "Attributes not implemented.\n";
2549 DictScope BA(W, "BuildAttributes");
2550 for (const ELFO::Elf_Shdr &Sec :
2551 unwrapOrError(ObjF->getFileName(), Obj->sections())) {
2552 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES)
2555 ArrayRef<uint8_t> Contents =
2556 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(&Sec));
2557 if (Contents[0] != ARMBuildAttrs::Format_Version) {
2558 errs() << "unrecognised FormatVersion: 0x"
2559 << Twine::utohexstr(Contents[0]) << '\n';
2563 W.printHex("FormatVersion", Contents[0]);
2564 if (Contents.size() == 1)
2567 ARMAttributeParser(&W).Parse(Contents, true);
2571 template <class ELFT> class MipsGOTParser {
2573 TYPEDEF_ELF_TYPES(ELFT)
2574 using Entry = typename ELFO::Elf_Addr;
2575 using Entries = ArrayRef<Entry>;
2577 const bool IsStatic;
2578 const ELFO * const Obj;
2580 MipsGOTParser(const ELFO *Obj, StringRef FileName, Elf_Dyn_Range DynTable,
2581 Elf_Sym_Range DynSyms);
2583 bool hasGot() const { return !GotEntries.empty(); }
2584 bool hasPlt() const { return !PltEntries.empty(); }
2586 uint64_t getGp() const;
2588 const Entry *getGotLazyResolver() const;
2589 const Entry *getGotModulePointer() const;
2590 const Entry *getPltLazyResolver() const;
2591 const Entry *getPltModulePointer() const;
2593 Entries getLocalEntries() const;
2594 Entries getGlobalEntries() const;
2595 Entries getOtherEntries() const;
2596 Entries getPltEntries() const;
2598 uint64_t getGotAddress(const Entry * E) const;
2599 int64_t getGotOffset(const Entry * E) const;
2600 const Elf_Sym *getGotSym(const Entry *E) const;
2602 uint64_t getPltAddress(const Entry * E) const;
2603 const Elf_Sym *getPltSym(const Entry *E) const;
2605 StringRef getPltStrTable() const { return PltStrTable; }
2608 const Elf_Shdr *GotSec;
2612 const Elf_Shdr *PltSec;
2613 const Elf_Shdr *PltRelSec;
2614 const Elf_Shdr *PltSymTable;
2617 Elf_Sym_Range GotDynSyms;
2618 StringRef PltStrTable;
2624 } // end anonymous namespace
2626 template <class ELFT>
2627 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, StringRef FileName,
2628 Elf_Dyn_Range DynTable,
2629 Elf_Sym_Range DynSyms)
2630 : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0),
2631 GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr),
2632 FileName(FileName) {
2633 // See "Global Offset Table" in Chapter 5 in the following document
2634 // for detailed GOT description.
2635 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
2637 // Find static GOT secton.
2639 GotSec = findSectionByName(*Obj, FileName, ".got");
2643 ArrayRef<uint8_t> Content =
2644 unwrapOrError(FileName, Obj->getSectionContents(GotSec));
2645 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
2646 Content.size() / sizeof(Entry));
2647 LocalNum = GotEntries.size();
2651 // Lookup dynamic table tags which define GOT/PLT layouts.
2652 Optional<uint64_t> DtPltGot;
2653 Optional<uint64_t> DtLocalGotNum;
2654 Optional<uint64_t> DtGotSym;
2655 Optional<uint64_t> DtMipsPltGot;
2656 Optional<uint64_t> DtJmpRel;
2657 for (const auto &Entry : DynTable) {
2658 switch (Entry.getTag()) {
2659 case ELF::DT_PLTGOT:
2660 DtPltGot = Entry.getVal();
2662 case ELF::DT_MIPS_LOCAL_GOTNO:
2663 DtLocalGotNum = Entry.getVal();
2665 case ELF::DT_MIPS_GOTSYM:
2666 DtGotSym = Entry.getVal();
2668 case ELF::DT_MIPS_PLTGOT:
2669 DtMipsPltGot = Entry.getVal();
2671 case ELF::DT_JMPREL:
2672 DtJmpRel = Entry.getVal();
2677 // Find dynamic GOT section.
2678 if (DtPltGot || DtLocalGotNum || DtGotSym) {
2680 report_fatal_error("Cannot find PLTGOT dynamic table tag.");
2682 report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag.");
2684 report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag.");
2686 size_t DynSymTotal = DynSyms.size();
2687 if (*DtGotSym > DynSymTotal)
2689 createError("MIPS_GOTSYM exceeds a number of dynamic symbols"),
2692 GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot);
2694 reportError(createError("There is no not empty GOT section at 0x" +
2695 Twine::utohexstr(*DtPltGot)),
2698 LocalNum = *DtLocalGotNum;
2699 GlobalNum = DynSymTotal - *DtGotSym;
2701 ArrayRef<uint8_t> Content =
2702 unwrapOrError(FileName, Obj->getSectionContents(GotSec));
2703 GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
2704 Content.size() / sizeof(Entry));
2705 GotDynSyms = DynSyms.drop_front(*DtGotSym);
2708 // Find PLT section.
2709 if (DtMipsPltGot || DtJmpRel) {
2711 report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag.");
2713 report_fatal_error("Cannot find JMPREL dynamic table tag.");
2715 PltSec = findNotEmptySectionByAddress(Obj, FileName, * DtMipsPltGot);
2717 report_fatal_error("There is no not empty PLTGOT section at 0x " +
2718 Twine::utohexstr(*DtMipsPltGot));
2720 PltRelSec = findNotEmptySectionByAddress(Obj, FileName, * DtJmpRel);
2722 report_fatal_error("There is no not empty RELPLT section at 0x" +
2723 Twine::utohexstr(*DtJmpRel));
2725 ArrayRef<uint8_t> PltContent =
2726 unwrapOrError(FileName, Obj->getSectionContents(PltSec));
2727 PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()),
2728 PltContent.size() / sizeof(Entry));
2730 PltSymTable = unwrapOrError(FileName, Obj->getSection(PltRelSec->sh_link));
2732 unwrapOrError(FileName, Obj->getStringTableForSymtab(*PltSymTable));
2736 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const {
2737 return GotSec->sh_addr + 0x7ff0;
2740 template <class ELFT>
2741 const typename MipsGOTParser<ELFT>::Entry *
2742 MipsGOTParser<ELFT>::getGotLazyResolver() const {
2743 return LocalNum > 0 ? &GotEntries[0] : nullptr;
2746 template <class ELFT>
2747 const typename MipsGOTParser<ELFT>::Entry *
2748 MipsGOTParser<ELFT>::getGotModulePointer() const {
2751 const Entry &E = GotEntries[1];
2752 if ((E >> (sizeof(Entry) * 8 - 1)) == 0)
2757 template <class ELFT>
2758 typename MipsGOTParser<ELFT>::Entries
2759 MipsGOTParser<ELFT>::getLocalEntries() const {
2760 size_t Skip = getGotModulePointer() ? 2 : 1;
2761 if (LocalNum - Skip <= 0)
2763 return GotEntries.slice(Skip, LocalNum - Skip);
2766 template <class ELFT>
2767 typename MipsGOTParser<ELFT>::Entries
2768 MipsGOTParser<ELFT>::getGlobalEntries() const {
2771 return GotEntries.slice(LocalNum, GlobalNum);
2774 template <class ELFT>
2775 typename MipsGOTParser<ELFT>::Entries
2776 MipsGOTParser<ELFT>::getOtherEntries() const {
2777 size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum;
2780 return GotEntries.slice(LocalNum + GlobalNum, OtherNum);
2783 template <class ELFT>
2784 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const {
2785 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
2786 return GotSec->sh_addr + Offset;
2789 template <class ELFT>
2790 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const {
2791 int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
2792 return Offset - 0x7ff0;
2795 template <class ELFT>
2796 const typename MipsGOTParser<ELFT>::Elf_Sym *
2797 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const {
2798 int64_t Offset = std::distance(GotEntries.data(), E);
2799 return &GotDynSyms[Offset - LocalNum];
2802 template <class ELFT>
2803 const typename MipsGOTParser<ELFT>::Entry *
2804 MipsGOTParser<ELFT>::getPltLazyResolver() const {
2805 return PltEntries.empty() ? nullptr : &PltEntries[0];
2808 template <class ELFT>
2809 const typename MipsGOTParser<ELFT>::Entry *
2810 MipsGOTParser<ELFT>::getPltModulePointer() const {
2811 return PltEntries.size() < 2 ? nullptr : &PltEntries[1];
2814 template <class ELFT>
2815 typename MipsGOTParser<ELFT>::Entries
2816 MipsGOTParser<ELFT>::getPltEntries() const {
2817 if (PltEntries.size() <= 2)
2819 return PltEntries.slice(2, PltEntries.size() - 2);
2822 template <class ELFT>
2823 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const {
2824 int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry);
2825 return PltSec->sh_addr + Offset;
2828 template <class ELFT>
2829 const typename MipsGOTParser<ELFT>::Elf_Sym *
2830 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const {
2831 int64_t Offset = std::distance(getPltEntries().data(), E);
2832 if (PltRelSec->sh_type == ELF::SHT_REL) {
2833 Elf_Rel_Range Rels = unwrapOrError(FileName, Obj->rels(PltRelSec));
2834 return unwrapOrError(FileName,
2835 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
2837 Elf_Rela_Range Rels = unwrapOrError(FileName, Obj->relas(PltRelSec));
2838 return unwrapOrError(FileName,
2839 Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
2843 static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
2844 {"None", Mips::AFL_EXT_NONE},
2845 {"Broadcom SB-1", Mips::AFL_EXT_SB1},
2846 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON},
2847 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
2848 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
2849 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
2850 {"LSI R4010", Mips::AFL_EXT_4010},
2851 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E},
2852 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F},
2853 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A},
2854 {"MIPS R4650", Mips::AFL_EXT_4650},
2855 {"MIPS R5900", Mips::AFL_EXT_5900},
2856 {"MIPS R10000", Mips::AFL_EXT_10000},
2857 {"NEC VR4100", Mips::AFL_EXT_4100},
2858 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111},
2859 {"NEC VR4120", Mips::AFL_EXT_4120},
2860 {"NEC VR5400", Mips::AFL_EXT_5400},
2861 {"NEC VR5500", Mips::AFL_EXT_5500},
2862 {"RMI Xlr", Mips::AFL_EXT_XLR},
2863 {"Toshiba R3900", Mips::AFL_EXT_3900}
2866 static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
2867 {"DSP", Mips::AFL_ASE_DSP},
2868 {"DSPR2", Mips::AFL_ASE_DSPR2},
2869 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
2870 {"MCU", Mips::AFL_ASE_MCU},
2871 {"MDMX", Mips::AFL_ASE_MDMX},
2872 {"MIPS-3D", Mips::AFL_ASE_MIPS3D},
2873 {"MT", Mips::AFL_ASE_MT},
2874 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS},
2875 {"VZ", Mips::AFL_ASE_VIRT},
2876 {"MSA", Mips::AFL_ASE_MSA},
2877 {"MIPS16", Mips::AFL_ASE_MIPS16},
2878 {"microMIPS", Mips::AFL_ASE_MICROMIPS},
2879 {"XPA", Mips::AFL_ASE_XPA},
2880 {"CRC", Mips::AFL_ASE_CRC},
2881 {"GINV", Mips::AFL_ASE_GINV},
2884 static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
2885 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY},
2886 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
2887 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
2888 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT},
2889 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
2890 Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
2891 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX},
2892 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
2893 {"Hard float compat (32-bit CPU, 64-bit FPU)",
2894 Mips::Val_GNU_MIPS_ABI_FP_64A}
2897 static const EnumEntry<unsigned> ElfMipsFlags1[] {
2898 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
2901 static int getMipsRegisterSize(uint8_t Flag) {
2903 case Mips::AFL_REG_NONE:
2905 case Mips::AFL_REG_32:
2907 case Mips::AFL_REG_64:
2909 case Mips::AFL_REG_128:
2916 template <class ELFT>
2917 static void printMipsReginfoData(ScopedPrinter &W,
2918 const Elf_Mips_RegInfo<ELFT> &Reginfo) {
2919 W.printHex("GP", Reginfo.ri_gp_value);
2920 W.printHex("General Mask", Reginfo.ri_gprmask);
2921 W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]);
2922 W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]);
2923 W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]);
2924 W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]);
2927 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() {
2928 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2929 const Elf_Shdr *Shdr = findSectionByName(*Obj, ObjF->getFileName(), ".reginfo");
2931 W.startLine() << "There is no .reginfo section in the file.\n";
2934 ArrayRef<uint8_t> Sec =
2935 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
2936 if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) {
2937 W.startLine() << "The .reginfo section has a wrong size.\n";
2941 DictScope GS(W, "MIPS RegInfo");
2942 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data());
2943 printMipsReginfoData(W, *Reginfo);
2946 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() {
2947 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2948 const Elf_Shdr *Shdr =
2949 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.options");
2951 W.startLine() << "There is no .MIPS.options section in the file.\n";
2955 DictScope GS(W, "MIPS Options");
2957 ArrayRef<uint8_t> Sec =
2958 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
2959 while (!Sec.empty()) {
2960 if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) {
2961 W.startLine() << "The .MIPS.options section has a wrong size.\n";
2964 auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data());
2965 DictScope GS(W, getElfMipsOptionsOdkType(O->kind));
2968 printMipsReginfoData(W, O->getRegInfo());
2971 W.startLine() << "Unsupported MIPS options tag.\n";
2974 Sec = Sec.slice(O->size);
2978 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
2979 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2980 const Elf_Shdr *StackMapSection = nullptr;
2981 for (const auto &Sec : unwrapOrError(ObjF->getFileName(), Obj->sections())) {
2983 unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec));
2984 if (Name == ".llvm_stackmaps") {
2985 StackMapSection = &Sec;
2990 if (!StackMapSection)
2993 ArrayRef<uint8_t> StackMapContentsArray = unwrapOrError(
2994 ObjF->getFileName(), Obj->getSectionContents(StackMapSection));
2996 prettyPrintStackMap(
2997 W, StackMapParser<ELFT::TargetEndianness>(StackMapContentsArray));
3000 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() {
3001 ELFDumperStyle->printGroupSections(ObjF->getELFFile());
3004 template <class ELFT> void ELFDumper<ELFT>::printAddrsig() {
3005 ELFDumperStyle->printAddrsig(ObjF->getELFFile());
3008 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1,
3012 OS.PadToColumn(37u);
3017 template <class ELFT>
3018 static std::string getSectionHeadersNumString(const ELFFile<ELFT> *Obj,
3019 StringRef FileName) {
3020 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
3021 if (ElfHeader->e_shnum != 0)
3022 return to_string(ElfHeader->e_shnum);
3024 ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(FileName, Obj->sections());
3027 return "0 (" + to_string(Arr[0].sh_size) + ")";
3030 template <class ELFT>
3031 static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj,
3032 StringRef FileName) {
3033 const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
3034 if (ElfHeader->e_shstrndx != SHN_XINDEX)
3035 return to_string(ElfHeader->e_shstrndx);
3037 ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(FileName, Obj->sections());
3039 return "65535 (corrupt: out of range)";
3040 return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) +
3044 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
3045 const Elf_Ehdr *e = Obj->getHeader();
3046 OS << "ELF Header:\n";
3049 for (int i = 0; i < ELF::EI_NIDENT; i++)
3050 OS << format(" %02x", static_cast<int>(e->e_ident[i]));
3052 Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
3053 printFields(OS, "Class:", Str);
3054 Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding));
3055 printFields(OS, "Data:", Str);
3058 OS.PadToColumn(37u);
3059 OS << to_hexString(e->e_ident[ELF::EI_VERSION]);
3060 if (e->e_version == ELF::EV_CURRENT)
3063 Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI));
3064 printFields(OS, "OS/ABI:", Str);
3066 "ABI Version:", std::to_string(e->e_ident[ELF::EI_ABIVERSION]));
3067 Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType));
3068 printFields(OS, "Type:", Str);
3069 Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType));
3070 printFields(OS, "Machine:", Str);
3071 Str = "0x" + to_hexString(e->e_version);
3072 printFields(OS, "Version:", Str);
3073 Str = "0x" + to_hexString(e->e_entry);
3074 printFields(OS, "Entry point address:", Str);
3075 Str = to_string(e->e_phoff) + " (bytes into file)";
3076 printFields(OS, "Start of program headers:", Str);
3077 Str = to_string(e->e_shoff) + " (bytes into file)";
3078 printFields(OS, "Start of section headers:", Str);
3079 std::string ElfFlags;
3080 if (e->e_machine == EM_MIPS)
3082 printFlags(e->e_flags, makeArrayRef(ElfHeaderMipsFlags),
3083 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
3084 unsigned(ELF::EF_MIPS_MACH));
3085 else if (e->e_machine == EM_RISCV)
3086 ElfFlags = printFlags(e->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
3087 Str = "0x" + to_hexString(e->e_flags);
3088 if (!ElfFlags.empty())
3089 Str = Str + ", " + ElfFlags;
3090 printFields(OS, "Flags:", Str);
3091 Str = to_string(e->e_ehsize) + " (bytes)";
3092 printFields(OS, "Size of this header:", Str);
3093 Str = to_string(e->e_phentsize) + " (bytes)";
3094 printFields(OS, "Size of program headers:", Str);
3095 Str = to_string(e->e_phnum);
3096 printFields(OS, "Number of program headers:", Str);
3097 Str = to_string(e->e_shentsize) + " (bytes)";
3098 printFields(OS, "Size of section headers:", Str);
3099 Str = getSectionHeadersNumString(Obj, this->FileName);
3100 printFields(OS, "Number of section headers:", Str);
3101 Str = getSectionHeaderTableIndexString(Obj, this->FileName);
3102 printFields(OS, "Section header string table index:", Str);
3106 struct GroupMember {
3111 struct GroupSection {
3113 std::string Signature;
3119 std::vector<GroupMember> Members;
3122 template <class ELFT>
3123 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj,
3124 StringRef FileName) {
3125 using Elf_Shdr = typename ELFT::Shdr;
3126 using Elf_Sym = typename ELFT::Sym;
3127 using Elf_Word = typename ELFT::Word;
3129 std::vector<GroupSection> Ret;
3131 for (const Elf_Shdr &Sec : unwrapOrError(FileName, Obj->sections())) {
3133 if (Sec.sh_type != ELF::SHT_GROUP)
3136 const Elf_Shdr *Symtab =
3137 unwrapOrError(FileName, Obj->getSection(Sec.sh_link));
3138 StringRef StrTable =
3139 unwrapOrError(FileName, Obj->getStringTableForSymtab(*Symtab));
3140 const Elf_Sym *Sym = unwrapOrError(
3141 FileName, Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info));
3142 auto Data = unwrapOrError(
3143 FileName, Obj->template getSectionContentsAsArray<Elf_Word>(&Sec));
3145 StringRef Name = unwrapOrError(FileName, Obj->getSectionName(&Sec));
3146 StringRef Signature = StrTable.data() + Sym->st_name;
3147 Ret.push_back({Name,
3148 maybeDemangle(Signature),
3156 std::vector<GroupMember> &GM = Ret.back().Members;
3157 for (uint32_t Ndx : Data.slice(1)) {
3158 auto Sec = unwrapOrError(FileName, Obj->getSection(Ndx));
3159 const StringRef Name = unwrapOrError(FileName, Obj->getSectionName(Sec));
3160 GM.push_back({Name, Ndx});
3166 DenseMap<uint64_t, const GroupSection *>
3167 mapSectionsToGroups(ArrayRef<GroupSection> Groups) {
3168 DenseMap<uint64_t, const GroupSection *> Ret;
3169 for (const GroupSection &G : Groups)
3170 for (const GroupMember &GM : G.Members)
3171 Ret.insert({GM.Index, &G});
3177 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) {
3178 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName);
3179 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
3180 for (const GroupSection &G : V) {
3182 << getGroupType(G.Type) << " group section ["
3183 << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature
3184 << "] contains " << G.Members.size() << " sections:\n"
3185 << " [Index] Name\n";
3186 for (const GroupMember &GM : G.Members) {
3187 const GroupSection *MainGroup = Map[GM.Index];
3188 if (MainGroup != &G) {
3190 errs() << "Error: section [" << format_decimal(GM.Index, 5)
3191 << "] in group section [" << format_decimal(G.Index, 5)
3192 << "] already in group section ["
3193 << format_decimal(MainGroup->Index, 5) << "]";
3197 OS << " [" << format_decimal(GM.Index, 5) << "] " << GM.Name << "\n";
3202 OS << "There are no section groups in this file.\n";
3205 template <class ELFT>
3206 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
3207 const Elf_Rela &R, bool IsRela) {
3208 const Elf_Sym *Sym =
3209 unwrapOrError(this->FileName, Obj->getRelocationSymbol(&R, SymTab));
3210 std::string TargetName;
3211 if (Sym && Sym->getType() == ELF::STT_SECTION) {
3212 const Elf_Shdr *Sec = unwrapOrError(
3214 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
3215 TargetName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
3217 StringRef StrTable =
3218 unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*SymTab));
3219 TargetName = this->dumper()->getFullSymbolName(
3220 Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
3222 printRelocation(Obj, Sym, TargetName, R, IsRela);
3225 template <class ELFT>
3226 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
3227 StringRef SymbolName, const Elf_Rela &R,
3229 // First two fields are bit width dependent. The rest of them are fixed width.
3230 unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3231 Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias};
3232 unsigned Width = ELFT::Is64Bits ? 16 : 8;
3234 Fields[0].Str = to_string(format_hex_no_prefix(R.r_offset, Width));
3235 Fields[1].Str = to_string(format_hex_no_prefix(R.r_info, Width));
3237 SmallString<32> RelocName;
3238 Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName);
3239 Fields[2].Str = RelocName.c_str();
3241 if (Sym && (!SymbolName.empty() || Sym->getValue() != 0))
3242 Fields[3].Str = to_string(format_hex_no_prefix(Sym->getValue(), Width));
3244 Fields[4].Str = SymbolName;
3245 for (const Field &F : Fields)
3250 int64_t RelAddend = R.r_addend;
3251 if (!SymbolName.empty()) {
3252 if (R.r_addend < 0) {
3254 RelAddend = std::abs(RelAddend);
3259 Addend += to_hexString(RelAddend, false);
3261 OS << Addend << "\n";
3264 template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) {
3265 bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA;
3266 bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR;
3271 if (IsRelr && opts::RawRelr)
3277 << " Symbol's Value Symbol's Name";
3279 OS << " Info Type Sym. Value Symbol's Name";
3285 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) {
3286 bool HasRelocSections = false;
3287 for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
3288 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA &&
3289 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL &&
3290 Sec.sh_type != ELF::SHT_ANDROID_RELA &&
3291 Sec.sh_type != ELF::SHT_ANDROID_RELR)
3293 HasRelocSections = true;
3294 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec));
3295 unsigned Entries = Sec.getEntityCount();
3296 std::vector<Elf_Rela> AndroidRelas;
3297 if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
3298 Sec.sh_type == ELF::SHT_ANDROID_RELA) {
3299 // Android's packed relocation section needs to be unpacked first
3300 // to get the actual number of entries.
3301 AndroidRelas = unwrapOrError(this->FileName, Obj->android_relas(&Sec));
3302 Entries = AndroidRelas.size();
3304 std::vector<Elf_Rela> RelrRelas;
3305 if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
3306 Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
3307 // .relr.dyn relative relocation section needs to be unpacked first
3308 // to get the actual number of entries.
3309 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(&Sec));
3310 RelrRelas = unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
3311 Entries = RelrRelas.size();
3313 uintX_t Offset = Sec.sh_offset;
3314 OS << "\nRelocation section '" << Name << "' at offset 0x"
3315 << to_hexString(Offset, false) << " contains " << Entries
3317 printRelocHeader(Sec.sh_type);
3318 const Elf_Shdr *SymTab =
3319 unwrapOrError(this->FileName, Obj->getSection(Sec.sh_link));
3320 switch (Sec.sh_type) {
3322 for (const auto &R : unwrapOrError(this->FileName, Obj->rels(&Sec))) {
3324 Rela.r_offset = R.r_offset;
3325 Rela.r_info = R.r_info;
3327 printRelocation(Obj, SymTab, Rela, false);
3331 for (const auto &R : unwrapOrError(this->FileName, Obj->relas(&Sec)))
3332 printRelocation(Obj, SymTab, R, true);
3335 case ELF::SHT_ANDROID_RELR:
3337 for (const auto &R : unwrapOrError(this->FileName, Obj->relrs(&Sec)))
3338 OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8))
3341 for (const auto &R : RelrRelas)
3342 printRelocation(Obj, SymTab, R, false);
3344 case ELF::SHT_ANDROID_REL:
3345 case ELF::SHT_ANDROID_RELA:
3346 for (const auto &R : AndroidRelas)
3347 printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA);
3351 if (!HasRelocSections)
3352 OS << "\nThere are no relocations in this file.\n";
3355 // Print the offset of a particular section from anyone of the ranges:
3356 // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER].
3357 // If 'Type' does not fall within any of those ranges, then a string is
3358 // returned as '<unknown>' followed by the type value.
3359 static std::string getSectionTypeOffsetString(unsigned Type) {
3360 if (Type >= SHT_LOOS && Type <= SHT_HIOS)
3361 return "LOOS+0x" + to_hexString(Type - SHT_LOOS);
3362 else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC)
3363 return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC);
3364 else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER)
3365 return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER);
3366 return "0x" + to_hexString(Type) + ": <unknown>";
3369 static std::string getSectionTypeString(unsigned Arch, unsigned Type) {
3370 using namespace ELF;
3377 case SHT_ARM_PREEMPTMAP:
3378 return "ARM_PREEMPTMAP";
3379 case SHT_ARM_ATTRIBUTES:
3380 return "ARM_ATTRIBUTES";
3381 case SHT_ARM_DEBUGOVERLAY:
3382 return "ARM_DEBUGOVERLAY";
3383 case SHT_ARM_OVERLAYSECTION:
3384 return "ARM_OVERLAYSECTION";
3389 case SHT_X86_64_UNWIND:
3390 return "X86_64_UNWIND";
3394 case EM_MIPS_RS3_LE:
3396 case SHT_MIPS_REGINFO:
3397 return "MIPS_REGINFO";
3398 case SHT_MIPS_OPTIONS:
3399 return "MIPS_OPTIONS";
3400 case SHT_MIPS_DWARF:
3401 return "MIPS_DWARF";
3402 case SHT_MIPS_ABIFLAGS:
3403 return "MIPS_ABIFLAGS";
3432 case SHT_INIT_ARRAY:
3433 return "INIT_ARRAY";
3434 case SHT_FINI_ARRAY:
3435 return "FINI_ARRAY";
3436 case SHT_PREINIT_ARRAY:
3437 return "PREINIT_ARRAY";
3440 case SHT_SYMTAB_SHNDX:
3441 return "SYMTAB SECTION INDICES";
3442 case SHT_ANDROID_REL:
3443 return "ANDROID_REL";
3444 case SHT_ANDROID_RELA:
3445 return "ANDROID_RELA";
3447 case SHT_ANDROID_RELR:
3449 case SHT_LLVM_ODRTAB:
3450 return "LLVM_ODRTAB";
3451 case SHT_LLVM_LINKER_OPTIONS:
3452 return "LLVM_LINKER_OPTIONS";
3453 case SHT_LLVM_CALL_GRAPH_PROFILE:
3454 return "LLVM_CALL_GRAPH_PROFILE";
3455 case SHT_LLVM_ADDRSIG:
3456 return "LLVM_ADDRSIG";
3457 case SHT_LLVM_DEPENDENT_LIBRARIES:
3458 return "LLVM_DEPENDENT_LIBRARIES";
3459 case SHT_LLVM_SYMPART:
3460 return "LLVM_SYMPART";
3461 case SHT_LLVM_PART_EHDR:
3462 return "LLVM_PART_EHDR";
3463 case SHT_LLVM_PART_PHDR:
3464 return "LLVM_PART_PHDR";
3465 // FIXME: Parse processor specific GNU attributes
3466 case SHT_GNU_ATTRIBUTES:
3467 return "ATTRIBUTES";
3470 case SHT_GNU_verdef:
3472 case SHT_GNU_verneed:
3474 case SHT_GNU_versym:
3477 return getSectionTypeOffsetString(Type);
3482 static void printSectionDescription(formatted_raw_ostream &OS,
3483 unsigned EMachine) {
3484 OS << "Key to Flags:\n";
3485 OS << " W (write), A (alloc), X (execute), M (merge), S (strings), I "
3487 OS << " L (link order), O (extra OS processing required), G (group), T "
3489 OS << " C (compressed), x (unknown), o (OS specific), E (exclude),\n";
3491 if (EMachine == EM_X86_64)
3492 OS << " l (large), ";
3493 else if (EMachine == EM_ARM)
3494 OS << " y (purecode), ";
3498 OS << "p (processor specific)\n";
3501 template <class ELFT>
3502 void GNUStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
3503 unsigned Bias = ELFT::Is64Bits ? 0 : 8;
3504 ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
3505 OS << "There are " << to_string(Sections.size())
3506 << " section headers, starting at offset "
3507 << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n";
3508 OS << "Section Headers:\n";
3509 Field Fields[11] = {
3510 {"[Nr]", 2}, {"Name", 7}, {"Type", 25},
3511 {"Address", 41}, {"Off", 58 - Bias}, {"Size", 65 - Bias},
3512 {"ES", 72 - Bias}, {"Flg", 75 - Bias}, {"Lk", 79 - Bias},
3513 {"Inf", 82 - Bias}, {"Al", 86 - Bias}};
3514 for (auto &F : Fields)
3518 const ELFObjectFile<ELFT> *ElfObj = this->dumper()->getElfObject();
3519 size_t SectionIndex = 0;
3520 for (const Elf_Shdr &Sec : Sections) {
3521 Fields[0].Str = to_string(SectionIndex);
3522 Fields[1].Str = unwrapOrError<StringRef>(
3523 ElfObj->getFileName(), Obj->getSectionName(&Sec, this->WarningHandler));
3525 getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type);
3527 to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8));
3528 Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6));
3529 Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6));
3530 Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2));
3531 Fields[7].Str = getGNUFlags(Obj->getHeader()->e_machine, Sec.sh_flags);
3532 Fields[8].Str = to_string(Sec.sh_link);
3533 Fields[9].Str = to_string(Sec.sh_info);
3534 Fields[10].Str = to_string(Sec.sh_addralign);
3536 OS.PadToColumn(Fields[0].Column);
3537 OS << "[" << right_justify(Fields[0].Str, 2) << "]";
3538 for (int i = 1; i < 7; i++)
3539 printField(Fields[i]);
3540 OS.PadToColumn(Fields[7].Column);
3541 OS << right_justify(Fields[7].Str, 3);
3542 OS.PadToColumn(Fields[8].Column);
3543 OS << right_justify(Fields[8].Str, 2);
3544 OS.PadToColumn(Fields[9].Column);
3545 OS << right_justify(Fields[9].Str, 3);
3546 OS.PadToColumn(Fields[10].Column);
3547 OS << right_justify(Fields[10].Str, 2);
3551 printSectionDescription(OS, Obj->getHeader()->e_machine);
3554 template <class ELFT>
3555 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name,
3557 bool NonVisibilityBitsUsed) {
3559 OS << "\nSymbol table '" << Name << "' contains " << Entries
3562 OS << "\n Symbol table for image:\n";
3565 OS << " Num: Value Size Type Bind Vis";
3567 OS << " Num: Value Size Type Bind Vis";
3569 if (NonVisibilityBitsUsed)
3571 OS << " Ndx Name\n";
3574 template <class ELFT>
3575 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj,
3576 const Elf_Sym *Symbol,
3577 const Elf_Sym *FirstSym) {
3578 unsigned SectionIndex = Symbol->st_shndx;
3579 switch (SectionIndex) {
3580 case ELF::SHN_UNDEF:
3584 case ELF::SHN_COMMON:
3586 case ELF::SHN_XINDEX: {
3587 Expected<uint32_t> IndexOrErr = object::getExtendedSymbolTableIndex<ELFT>(
3588 Symbol, FirstSym, this->dumper()->getShndxTable());
3590 assert(Symbol->st_shndx == SHN_XINDEX &&
3591 "getSymbolSectionIndex should only fail due to an invalid "
3592 "SHT_SYMTAB_SHNDX table/reference");
3593 this->reportUniqueWarning(IndexOrErr.takeError());
3594 return "RSV[0xffff]";
3596 return to_string(format_decimal(*IndexOrErr, 3));
3600 // Processor specific
3601 if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC)
3602 return std::string("PRC[0x") +
3603 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3605 if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS)
3606 return std::string("OS[0x") +
3607 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3608 // Architecture reserved:
3609 if (SectionIndex >= ELF::SHN_LORESERVE &&
3610 SectionIndex <= ELF::SHN_HIRESERVE)
3611 return std::string("RSV[0x") +
3612 to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3613 // A normal section with an index
3614 return to_string(format_decimal(SectionIndex, 3));
3618 template <class ELFT>
3619 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
3620 const Elf_Sym *FirstSym, StringRef StrTable,
3621 bool IsDynamic, bool NonVisibilityBitsUsed) {
3623 static bool Dynamic = true;
3625 // If this function was called with a different value from IsDynamic
3626 // from last call, happens when we move from dynamic to static symbol
3627 // table, "Num" field should be reset.
3628 if (!Dynamic != !IsDynamic) {
3633 unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3634 Field Fields[8] = {0, 8, 17 + Bias, 23 + Bias,
3635 31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias};
3636 Fields[0].Str = to_string(format_decimal(Idx++, 6)) + ":";
3637 Fields[1].Str = to_string(
3638 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8));
3639 Fields[2].Str = to_string(format_decimal(Symbol->st_size, 5));
3641 unsigned char SymbolType = Symbol->getType();
3642 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
3643 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
3644 Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
3646 Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
3649 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
3651 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities));
3652 if (Symbol->st_other & ~0x3)
3654 " [<other: " + to_string(format_hex(Symbol->st_other, 2)) + ">]";
3656 Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0;
3657 Fields[6].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym);
3660 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
3661 for (auto &Entry : Fields)
3666 template <class ELFT>
3667 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym,
3668 uint32_t Sym, StringRef StrTable,
3670 unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3671 Field Fields[9] = {0, 6, 11, 20 + Bias, 25 + Bias,
3672 34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias};
3673 Fields[0].Str = to_string(format_decimal(Sym, 5));
3674 Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":";
3676 const auto Symbol = FirstSym + Sym;
3677 Fields[2].Str = to_string(
3678 format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8));
3679 Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5));
3681 unsigned char SymbolType = Symbol->getType();
3682 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
3683 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
3684 Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
3686 Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
3689 printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
3691 printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities));
3692 Fields[7].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym);
3693 Fields[8].Str = this->dumper()->getFullSymbolName(Symbol, StrTable, true);
3695 for (auto &Entry : Fields)
3700 template <class ELFT>
3701 void GNUStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
3702 bool PrintDynamicSymbols) {
3703 if (!PrintSymbols && !PrintDynamicSymbols)
3705 // GNU readelf prints both the .dynsym and .symtab with --symbols.
3706 this->dumper()->printSymbolsHelper(true);
3708 this->dumper()->printSymbolsHelper(false);
3711 template <class ELFT> void GNUStyle<ELFT>::printHashSymbols(const ELFO *Obj) {
3712 if (this->dumper()->getDynamicStringTable().empty())
3714 auto StringTable = this->dumper()->getDynamicStringTable();
3715 auto DynSyms = this->dumper()->dynamic_symbols();
3717 // Try printing .hash
3718 if (auto SysVHash = this->dumper()->getHashTable()) {
3719 OS << "\n Symbol table of .hash for image:\n";
3721 OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
3723 OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
3726 auto Buckets = SysVHash->buckets();
3727 auto Chains = SysVHash->chains();
3728 for (uint32_t Buc = 0; Buc < SysVHash->nbucket; Buc++) {
3729 if (Buckets[Buc] == ELF::STN_UNDEF)
3731 std::vector<bool> Visited(SysVHash->nchain);
3732 for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash->nchain; Ch = Chains[Ch]) {
3733 if (Ch == ELF::STN_UNDEF)
3738 createError(".hash section is invalid: bucket " + Twine(Ch) +
3739 ": a cycle was detected in the linked chain"),
3744 printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc);
3750 // Try printing .gnu.hash
3751 if (auto GnuHash = this->dumper()->getGnuHashTable()) {
3752 OS << "\n Symbol table of .gnu.hash for image:\n";
3754 OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
3756 OS << " Num Buc: Value Size Type Bind Vis Ndx Name";
3758 auto Buckets = GnuHash->buckets();
3759 for (uint32_t Buc = 0; Buc < GnuHash->nbuckets; Buc++) {
3760 if (Buckets[Buc] == ELF::STN_UNDEF)
3762 uint32_t Index = Buckets[Buc];
3763 uint32_t GnuHashable = Index - GnuHash->symndx;
3764 // Print whole chain
3766 printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc);
3767 // Chain ends at symbol with stopper bit
3768 if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1)
3775 static inline std::string printPhdrFlags(unsigned Flag) {
3777 Str = (Flag & PF_R) ? "R" : " ";
3778 Str += (Flag & PF_W) ? "W" : " ";
3779 Str += (Flag & PF_X) ? "E" : " ";
3783 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO
3784 // PT_TLS must only have SHF_TLS sections
3785 template <class ELFT>
3786 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr,
3787 const Elf_Shdr &Sec) {
3788 return (((Sec.sh_flags & ELF::SHF_TLS) &&
3789 ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) ||
3790 (Phdr.p_type == ELF::PT_GNU_RELRO))) ||
3791 (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS));
3794 // Non-SHT_NOBITS must have its offset inside the segment
3795 // Only non-zero section can be at end of segment
3796 template <class ELFT>
3797 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3798 if (Sec.sh_type == ELF::SHT_NOBITS)
3801 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0);
3802 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties
3804 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
3805 if (Sec.sh_offset >= Phdr.p_offset)
3806 return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset)
3807 /*only non-zero sized sections at end*/
3808 && (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz));
3812 // SHF_ALLOC must have VMA inside segment
3813 // Only non-zero section can be at end of segment
3814 template <class ELFT>
3815 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3816 if (!(Sec.sh_flags & ELF::SHF_ALLOC))
3819 (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0);
3820 // .tbss is special, it only has memory in PT_TLS and has NOBITS properties
3822 (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
3823 if (Sec.sh_addr >= Phdr.p_vaddr)
3824 return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) &&
3825 (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz));
3829 // No section with zero size must be at start or end of PT_DYNAMIC
3830 template <class ELFT>
3831 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3832 if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0)
3834 // Is section within the phdr both based on offset and VMA ?
3835 return ((Sec.sh_type == ELF::SHT_NOBITS) ||
3836 (Sec.sh_offset > Phdr.p_offset &&
3837 Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) &&
3838 (!(Sec.sh_flags & ELF::SHF_ALLOC) ||
3839 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz));
3842 template <class ELFT>
3843 void GNUStyle<ELFT>::printProgramHeaders(
3844 const ELFO *Obj, bool PrintProgramHeaders,
3845 cl::boolOrDefault PrintSectionMapping) {
3846 if (PrintProgramHeaders)
3847 printProgramHeaders(Obj);
3849 // Display the section mapping along with the program headers, unless
3850 // -section-mapping is explicitly set to false.
3851 if (PrintSectionMapping != cl::BOU_FALSE)
3852 printSectionMapping(Obj);
3855 template <class ELFT>
3856 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
3857 unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3858 const Elf_Ehdr *Header = Obj->getHeader();
3859 Field Fields[8] = {2, 17, 26, 37 + Bias,
3860 48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias};
3861 OS << "\nElf file type is "
3862 << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n"
3863 << "Entry point " << format_hex(Header->e_entry, 3) << "\n"
3864 << "There are " << Header->e_phnum << " program headers,"
3865 << " starting at offset " << Header->e_phoff << "\n\n"
3866 << "Program Headers:\n";
3868 OS << " Type Offset VirtAddr PhysAddr "
3869 << " FileSiz MemSiz Flg Align\n";
3871 OS << " Type Offset VirtAddr PhysAddr FileSiz "
3872 << "MemSiz Flg Align\n";
3874 unsigned Width = ELFT::Is64Bits ? 18 : 10;
3875 unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7;
3876 for (const auto &Phdr :
3877 unwrapOrError(this->FileName, Obj->program_headers())) {
3878 Fields[0].Str = getElfPtType(Header->e_machine, Phdr.p_type);
3879 Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8));
3880 Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width));
3881 Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width));
3882 Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth));
3883 Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth));
3884 Fields[6].Str = printPhdrFlags(Phdr.p_flags);
3885 Fields[7].Str = to_string(format_hex(Phdr.p_align, 1));
3886 for (auto Field : Fields)
3888 if (Phdr.p_type == ELF::PT_INTERP) {
3889 OS << "\n [Requesting program interpreter: ";
3890 OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]";
3896 template <class ELFT>
3897 void GNUStyle<ELFT>::printSectionMapping(const ELFO *Obj) {
3898 OS << "\n Section to Segment mapping:\n Segment Sections...\n";
3899 DenseSet<const Elf_Shdr *> BelongsToSegment;
3901 for (const Elf_Phdr &Phdr :
3902 unwrapOrError(this->FileName, Obj->program_headers())) {
3903 std::string Sections;
3904 OS << format(" %2.2d ", Phnum++);
3905 for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
3906 // Check if each section is in a segment and then print mapping.
3907 // readelf additionally makes sure it does not print zero sized sections
3908 // at end of segments and for PT_DYNAMIC both start and end of section
3909 // .tbss must only be shown in PT_TLS section.
3910 bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) &&
3911 ((Sec.sh_flags & ELF::SHF_TLS) != 0) &&
3912 Phdr.p_type != ELF::PT_TLS;
3913 if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) &&
3914 checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) &&
3915 checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) {
3917 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() +
3919 BelongsToSegment.insert(&Sec);
3922 OS << Sections << "\n";
3926 // Display sections that do not belong to a segment.
3927 std::string Sections;
3928 for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
3929 if (BelongsToSegment.find(&Sec) == BelongsToSegment.end())
3931 unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + ' ';
3933 if (!Sections.empty()) {
3934 OS << " None " << Sections << '\n';
3940 template <class ELFT> struct RelSymbol {
3941 const typename ELFT::Sym *Sym;
3945 template <class ELFT>
3946 RelSymbol<ELFT> getSymbolForReloc(const ELFFile<ELFT> *Obj, StringRef FileName,
3947 const ELFDumper<ELFT> *Dumper,
3948 const typename ELFT::Rela &Reloc) {
3949 uint32_t SymIndex = Reloc.getSymbol(Obj->isMips64EL());
3950 const typename ELFT::Sym *Sym = Dumper->dynamic_symbols().begin() + SymIndex;
3951 Expected<StringRef> ErrOrName = Sym->getName(Dumper->getDynamicStringTable());
3955 Name = maybeDemangle(*ErrOrName);
3958 createError("unable to get name of the dynamic symbol with index " +
3959 Twine(SymIndex) + ": " + toString(ErrOrName.takeError())),
3964 return {Sym, std::move(Name)};
3968 template <class ELFT>
3969 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R,
3971 RelSymbol<ELFT> S = getSymbolForReloc(Obj, this->FileName, this->dumper(), R);
3972 printRelocation(Obj, S.Sym, S.Name, R, IsRela);
3975 template <class ELFT> void GNUStyle<ELFT>::printDynamic(const ELFO *Obj) {
3976 Elf_Dyn_Range Table = this->dumper()->dynamic_table();
3980 const DynRegionInfo &DynamicTableRegion =
3981 this->dumper()->getDynamicTableRegion();
3983 OS << "Dynamic section at offset "
3984 << format_hex(reinterpret_cast<const uint8_t *>(DynamicTableRegion.Addr) -
3987 << " contains " << Table.size() << " entries:\n";
3989 bool Is64 = ELFT::Is64Bits;
3991 OS << " Tag Type Name/Value\n";
3993 OS << " Tag Type Name/Value\n";
3994 for (auto Entry : Table) {
3995 uintX_t Tag = Entry.getTag();
3996 std::string TypeString =
3997 std::string("(") + Obj->getDynamicTagAsString(Tag).c_str() + ")";
3998 OS << " " << format_hex(Tag, Is64 ? 18 : 10)
3999 << format(" %-20s ", TypeString.c_str());
4000 this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
4005 template <class ELFT>
4006 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
4007 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
4008 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
4009 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
4010 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
4011 if (DynRelaRegion.Size > 0) {
4012 OS << "\n'RELA' relocation section at offset "
4013 << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) -
4016 << " contains " << DynRelaRegion.Size << " bytes:\n";
4017 printRelocHeader(ELF::SHT_RELA);
4018 for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
4019 printDynamicRelocation(Obj, Rela, true);
4021 if (DynRelRegion.Size > 0) {
4022 OS << "\n'REL' relocation section at offset "
4023 << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) -
4026 << " contains " << DynRelRegion.Size << " bytes:\n";
4027 printRelocHeader(ELF::SHT_REL);
4028 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
4030 Rela.r_offset = Rel.r_offset;
4031 Rela.r_info = Rel.r_info;
4033 printDynamicRelocation(Obj, Rela, false);
4036 if (DynRelrRegion.Size > 0) {
4037 OS << "\n'RELR' relocation section at offset "
4038 << format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) -
4041 << " contains " << DynRelrRegion.Size << " bytes:\n";
4042 printRelocHeader(ELF::SHT_REL);
4043 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
4044 std::vector<Elf_Rela> RelrRelas =
4045 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
4046 for (const Elf_Rela &Rela : RelrRelas) {
4047 printDynamicRelocation(Obj, Rela, false);
4050 if (DynPLTRelRegion.Size) {
4051 OS << "\n'PLT' relocation section at offset "
4052 << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) -
4055 << " contains " << DynPLTRelRegion.Size << " bytes:\n";
4057 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) {
4058 printRelocHeader(ELF::SHT_RELA);
4059 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
4060 printDynamicRelocation(Obj, Rela, true);
4062 printRelocHeader(ELF::SHT_REL);
4063 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
4065 Rela.r_offset = Rel.r_offset;
4066 Rela.r_info = Rel.r_info;
4068 printDynamicRelocation(Obj, Rela, false);
4073 template <class ELFT>
4074 void GNUStyle<ELFT>::printGNUVersionSectionProlog(
4075 const ELFFile<ELFT> *Obj, const typename ELFT::Shdr *Sec,
4076 const Twine &Label, unsigned EntriesNum) {
4077 StringRef SecName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
4078 OS << Label << " section '" << SecName << "' "
4079 << "contains " << EntriesNum << " entries:\n";
4081 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front();
4082 StringRef SymTabName = "<corrupt>";
4084 Expected<const typename ELFT::Shdr *> SymTabOrErr =
4085 Obj->getSection(Sec->sh_link);
4088 unwrapOrError(this->FileName, Obj->getSectionName(*SymTabOrErr));
4090 this->reportUniqueWarning(
4091 createError("invalid section linked to " +
4092 object::getELFSectionTypeName(Obj->getHeader()->e_machine,
4094 " section with index " + Twine(SecNdx) + ": " +
4095 toString(SymTabOrErr.takeError())));
4097 OS << " Addr: " << format_hex_no_prefix(Sec->sh_addr, 16)
4098 << " Offset: " << format_hex(Sec->sh_offset, 8)
4099 << " Link: " << Sec->sh_link << " (" << SymTabName << ")\n";
4102 template <class ELFT>
4103 void GNUStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
4104 const Elf_Shdr *Sec) {
4108 printGNUVersionSectionProlog(Obj, Sec, "Version symbols",
4109 Sec->sh_size / sizeof(Elf_Versym));
4110 Expected<ArrayRef<Elf_Versym>> VerTableOrErr =
4111 this->dumper()->getVersionTable(Sec, /*SymTab=*/nullptr,
4112 /*StrTab=*/nullptr);
4113 if (!VerTableOrErr) {
4114 this->reportUniqueWarning(VerTableOrErr.takeError());
4118 ArrayRef<Elf_Versym> VerTable = *VerTableOrErr;
4119 std::vector<StringRef> Versions;
4120 for (size_t I = 0, E = VerTable.size(); I < E; ++I) {
4121 unsigned Ndx = VerTable[I].vs_index;
4122 if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) {
4123 Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*");
4128 Expected<StringRef> NameOrErr =
4129 this->dumper()->getSymbolVersionByIndex(Ndx, IsDefault);
4132 unsigned SecNdx = Sec - &cantFail(Obj->sections()).front();
4133 this->reportUniqueWarning(createError(
4134 "unable to get a version for entry " + Twine(I) +
4135 " of SHT_GNU_versym section with index " + Twine(SecNdx) + ": " +
4136 toString(NameOrErr.takeError())));
4138 Versions.emplace_back("<corrupt>");
4141 Versions.emplace_back(*NameOrErr);
4144 // readelf prints 4 entries per line.
4145 uint64_t Entries = VerTable.size();
4146 for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) {
4147 OS << " " << format_hex_no_prefix(VersymRow, 3) << ":";
4148 for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) {
4149 unsigned Ndx = VerTable[VersymRow + I].vs_index;
4150 OS << format("%4x%c", Ndx & VERSYM_VERSION,
4151 Ndx & VERSYM_HIDDEN ? 'h' : ' ');
4152 OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13);
4159 static std::string versionFlagToString(unsigned Flags) {
4164 auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) {
4165 if (!(Flags & Flag))
4173 AddFlag(VER_FLG_BASE, "BASE");
4174 AddFlag(VER_FLG_WEAK, "WEAK");
4175 AddFlag(VER_FLG_INFO, "INFO");
4176 AddFlag(~0, "<unknown>");
4180 template <class ELFT>
4181 void GNUStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
4182 const Elf_Shdr *Sec) {
4186 printGNUVersionSectionProlog(Obj, Sec, "Version definition", Sec->sh_info);
4188 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec);
4190 this->reportUniqueWarning(V.takeError());
4194 for (const VerDef &Def : *V) {
4195 OS << format(" 0x%04x: Rev: %u Flags: %s Index: %u Cnt: %u Name: %s\n",
4196 Def.Offset, Def.Version,
4197 versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt,
4200 for (const VerdAux &Aux : Def.AuxV)
4201 OS << format(" 0x%04x: Parent %u: %s\n", Aux.Offset, ++I,
4208 template <class ELFT>
4209 void GNUStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
4210 const Elf_Shdr *Sec) {
4214 unsigned VerneedNum = Sec->sh_info;
4215 printGNUVersionSectionProlog(Obj, Sec, "Version needs", VerneedNum);
4217 Expected<std::vector<VerNeed>> V =
4218 this->dumper()->getVersionDependencies(Sec);
4220 this->reportUniqueWarning(V.takeError());
4224 for (const VerNeed &VN : *V) {
4225 OS << format(" 0x%04x: Version: %u File: %s Cnt: %u\n", VN.Offset,
4226 VN.Version, VN.File.data(), VN.Cnt);
4227 for (const VernAux &Aux : VN.AuxV)
4228 OS << format(" 0x%04x: Name: %s Flags: %s Version: %u\n", Aux.Offset,
4229 Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(),
4235 // Hash histogram shows statistics of how efficient the hash was for the
4236 // dynamic symbol table. The table shows number of hash buckets for different
4237 // lengths of chains as absolute number and percentage of the total buckets.
4238 // Additionally cumulative coverage of symbols for each set of buckets.
4239 template <class ELFT>
4240 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
4241 // Print histogram for .hash section
4242 if (const Elf_Hash *HashTable = this->dumper()->getHashTable()) {
4243 size_t NBucket = HashTable->nbucket;
4244 size_t NChain = HashTable->nchain;
4245 ArrayRef<Elf_Word> Buckets = HashTable->buckets();
4246 ArrayRef<Elf_Word> Chains = HashTable->chains();
4247 size_t TotalSyms = 0;
4248 // If hash table is correct, we have at least chains with 0 length
4249 size_t MaxChain = 1;
4250 size_t CumulativeNonZero = 0;
4252 if (NChain == 0 || NBucket == 0)
4255 std::vector<size_t> ChainLen(NBucket, 0);
4256 // Go over all buckets and and note chain lengths of each bucket (total
4257 // unique chain lengths).
4258 for (size_t B = 0; B < NBucket; B++) {
4259 std::vector<bool> Visited(NChain);
4260 for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) {
4261 if (C == ELF::STN_UNDEF)
4265 createError(".hash section is invalid: bucket " + Twine(C) +
4266 ": a cycle was detected in the linked chain"),
4271 if (MaxChain <= ++ChainLen[B])
4274 TotalSyms += ChainLen[B];
4280 std::vector<size_t> Count(MaxChain, 0) ;
4281 // Count how long is the chain for each bucket
4282 for (size_t B = 0; B < NBucket; B++)
4283 ++Count[ChainLen[B]];
4284 // Print Number of buckets with each chain lengths and their cumulative
4285 // coverage of the symbols
4286 OS << "Histogram for bucket list length (total of " << NBucket
4288 << " Length Number % of total Coverage\n";
4289 for (size_t I = 0; I < MaxChain; I++) {
4290 CumulativeNonZero += Count[I] * I;
4291 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I],
4292 (Count[I] * 100.0) / NBucket,
4293 (CumulativeNonZero * 100.0) / TotalSyms);
4297 // Print histogram for .gnu.hash section
4298 if (const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable()) {
4299 size_t NBucket = GnuHashTable->nbuckets;
4300 ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets();
4301 unsigned NumSyms = this->dumper()->dynamic_symbols().size();
4304 ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms);
4305 size_t Symndx = GnuHashTable->symndx;
4306 size_t TotalSyms = 0;
4307 size_t MaxChain = 1;
4308 size_t CumulativeNonZero = 0;
4310 if (Chains.empty() || NBucket == 0)
4313 std::vector<size_t> ChainLen(NBucket, 0);
4315 for (size_t B = 0; B < NBucket; B++) {
4319 for (size_t C = Buckets[B] - Symndx;
4320 C < Chains.size() && (Chains[C] & 1) == 0; C++)
4321 if (MaxChain < ++Len)
4331 std::vector<size_t> Count(MaxChain, 0) ;
4332 for (size_t B = 0; B < NBucket; B++)
4333 ++Count[ChainLen[B]];
4334 // Print Number of buckets with each chain lengths and their cumulative
4335 // coverage of the symbols
4336 OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket
4338 << " Length Number % of total Coverage\n";
4339 for (size_t I = 0; I <MaxChain; I++) {
4340 CumulativeNonZero += Count[I] * I;
4341 OS << format("%7lu %-10lu (%5.1f%%) %5.1f%%\n", I, Count[I],
4342 (Count[I] * 100.0) / NBucket,
4343 (CumulativeNonZero * 100.0) / TotalSyms);
4348 template <class ELFT>
4349 void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
4350 OS << "GNUStyle::printCGProfile not implemented\n";
4353 template <class ELFT>
4354 void GNUStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
4355 reportError(createError("--addrsig: not implemented"), this->FileName);
4358 static StringRef getGenericNoteTypeName(const uint32_t NT) {
4359 static const struct {
4363 {ELF::NT_VERSION, "NT_VERSION (version)"},
4364 {ELF::NT_ARCH, "NT_ARCH (architecture)"},
4365 {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"},
4366 {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"},
4369 for (const auto &Note : Notes)
4376 static StringRef getCoreNoteTypeName(const uint32_t NT) {
4377 static const struct {
4381 {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"},
4382 {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"},
4383 {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"},
4384 {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"},
4385 {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"},
4386 {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"},
4387 {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"},
4388 {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"},
4389 {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"},
4390 {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"},
4391 {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"},
4393 {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"},
4394 {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"},
4395 {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"},
4396 {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"},
4397 {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"},
4398 {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"},
4399 {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"},
4400 {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"},
4401 {ELF::NT_PPC_TM_CFPR,
4402 "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"},
4403 {ELF::NT_PPC_TM_CVMX,
4404 "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"},
4405 {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"},
4406 {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"},
4407 {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"},
4408 {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"},
4409 {ELF::NT_PPC_TM_CDSCR,
4410 "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"},
4412 {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"},
4413 {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"},
4414 {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"},
4416 {ELF::NT_S390_HIGH_GPRS,
4417 "NT_S390_HIGH_GPRS (s390 upper register halves)"},
4418 {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"},
4419 {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"},
4420 {ELF::NT_S390_TODPREG,
4421 "NT_S390_TODPREG (s390 TOD programmable register)"},
4422 {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"},
4423 {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"},
4424 {ELF::NT_S390_LAST_BREAK,
4425 "NT_S390_LAST_BREAK (s390 last breaking event address)"},
4426 {ELF::NT_S390_SYSTEM_CALL,
4427 "NT_S390_SYSTEM_CALL (s390 system call restart data)"},
4428 {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"},
4429 {ELF::NT_S390_VXRS_LOW,
4430 "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"},
4431 {ELF::NT_S390_VXRS_HIGH,
4432 "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"},
4433 {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"},
4434 {ELF::NT_S390_GS_BC,
4435 "NT_S390_GS_BC (s390 guarded-storage broadcast control)"},
4437 {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"},
4438 {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"},
4439 {ELF::NT_ARM_HW_BREAK,
4440 "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"},
4441 {ELF::NT_ARM_HW_WATCH,
4442 "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"},
4444 {ELF::NT_FILE, "NT_FILE (mapped files)"},
4445 {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"},
4446 {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"},
4449 for (const auto &Note : Notes)
4456 static std::string getGNUNoteTypeName(const uint32_t NT) {
4457 static const struct {
4461 {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"},
4462 {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"},
4463 {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"},
4464 {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"},
4465 {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"},
4468 for (const auto &Note : Notes)
4470 return std::string(Note.Name);
4473 raw_string_ostream OS(string);
4474 OS << format("Unknown note type (0x%08x)", NT);
4478 static std::string getFreeBSDNoteTypeName(const uint32_t NT) {
4479 static const struct {
4483 {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"},
4484 {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"},
4485 {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"},
4486 {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"},
4487 {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"},
4488 {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"},
4489 {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"},
4490 {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"},
4491 {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS,
4492 "NT_PROCSTAT_PSSTRINGS (ps_strings data)"},
4493 {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"},
4496 for (const auto &Note : Notes)
4498 return std::string(Note.Name);
4501 raw_string_ostream OS(string);
4502 OS << format("Unknown note type (0x%08x)", NT);
4506 static std::string getAMDNoteTypeName(const uint32_t NT) {
4507 static const struct {
4510 } Notes[] = {{ELF::NT_AMD_AMDGPU_HSA_METADATA,
4511 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"},
4512 {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"},
4513 {ELF::NT_AMD_AMDGPU_PAL_METADATA,
4514 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}};
4516 for (const auto &Note : Notes)
4518 return std::string(Note.Name);
4521 raw_string_ostream OS(string);
4522 OS << format("Unknown note type (0x%08x)", NT);
4526 static std::string getAMDGPUNoteTypeName(const uint32_t NT) {
4527 if (NT == ELF::NT_AMDGPU_METADATA)
4528 return std::string("NT_AMDGPU_METADATA (AMDGPU Metadata)");
4531 raw_string_ostream OS(string);
4532 OS << format("Unknown note type (0x%08x)", NT);
4536 template <typename ELFT>
4537 static std::string getGNUProperty(uint32_t Type, uint32_t DataSize,
4538 ArrayRef<uint8_t> Data) {
4540 raw_string_ostream OS(str);
4542 auto DumpBit = [&](uint32_t Flag, StringRef Name) {
4543 if (PrData & Flag) {
4553 OS << format("<application-specific type 0x%x>", Type);
4555 case GNU_PROPERTY_STACK_SIZE: {
4556 OS << "stack size: ";
4557 if (DataSize == sizeof(typename ELFT::uint))
4558 OS << formatv("{0:x}",
4559 (uint64_t)(*(const typename ELFT::Addr *)Data.data()));
4561 OS << format("<corrupt length: 0x%x>", DataSize);
4564 case GNU_PROPERTY_NO_COPY_ON_PROTECTED:
4565 OS << "no copy on protected";
4567 OS << format(" <corrupt length: 0x%x>", DataSize);
4569 case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
4570 case GNU_PROPERTY_X86_FEATURE_1_AND:
4571 OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: "
4573 if (DataSize != 4) {
4574 OS << format("<corrupt length: 0x%x>", DataSize);
4577 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4582 if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
4583 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI");
4584 DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC");
4586 DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
4587 DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
4590 OS << format("<unknown flags: 0x%x>", PrData);
4592 case GNU_PROPERTY_X86_ISA_1_NEEDED:
4593 case GNU_PROPERTY_X86_ISA_1_USED:
4595 << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: ");
4596 if (DataSize != 4) {
4597 OS << format("<corrupt length: 0x%x>", DataSize);
4600 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4605 DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV");
4606 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE");
4607 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2");
4608 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3");
4609 DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3");
4610 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1");
4611 DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2");
4612 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX");
4613 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2");
4614 DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA");
4615 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F");
4616 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD");
4617 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER");
4618 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF");
4619 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL");
4620 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ");
4621 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW");
4622 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS");
4623 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW");
4624 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG");
4625 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA");
4626 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI");
4627 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2");
4628 DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI");
4630 OS << format("<unknown flags: 0x%x>", PrData);
4633 case GNU_PROPERTY_X86_FEATURE_2_NEEDED:
4634 case GNU_PROPERTY_X86_FEATURE_2_USED:
4635 OS << "x86 feature "
4636 << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: ");
4637 if (DataSize != 4) {
4638 OS << format("<corrupt length: 0x%x>", DataSize);
4641 PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4646 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86");
4647 DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87");
4648 DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX");
4649 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM");
4650 DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM");
4651 DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM");
4652 DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR");
4653 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE");
4654 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT");
4655 DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC");
4657 OS << format("<unknown flags: 0x%x>", PrData);
4662 template <typename ELFT>
4663 static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) {
4664 using Elf_Word = typename ELFT::Word;
4666 SmallVector<std::string, 4> Properties;
4667 while (Arr.size() >= 8) {
4668 uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data());
4669 uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4);
4670 Arr = Arr.drop_front(8);
4672 // Take padding size into account if present.
4673 uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint));
4675 raw_string_ostream OS(str);
4676 if (Arr.size() < PaddedSize) {
4677 OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize);
4678 Properties.push_back(OS.str());
4681 Properties.push_back(
4682 getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize)));
4683 Arr = Arr.drop_front(PaddedSize);
4687 Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>");
4698 template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) {
4699 typedef typename ELFT::Word Elf_Word;
4701 ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()),
4702 reinterpret_cast<const Elf_Word *>(Desc.end()));
4704 if (Words.size() < 4)
4705 return {"", "", /*IsValid=*/false};
4707 static const char *OSNames[] = {
4708 "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl",
4710 StringRef OSName = "Unknown";
4711 if (Words[0] < array_lengthof(OSNames))
4712 OSName = OSNames[Words[0]];
4713 uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3];
4715 raw_string_ostream ABI(str);
4716 ABI << Major << "." << Minor << "." << Patch;
4717 return {OSName, ABI.str(), /*IsValid=*/true};
4720 static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) {
4722 raw_string_ostream OS(str);
4723 for (const auto &B : Desc)
4724 OS << format_hex_no_prefix(B, 2);
4728 static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) {
4729 return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
4732 template <typename ELFT>
4733 static void printGNUNote(raw_ostream &OS, uint32_t NoteType,
4734 ArrayRef<uint8_t> Desc) {
4738 case ELF::NT_GNU_ABI_TAG: {
4739 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
4740 if (!AbiTag.IsValid)
4741 OS << " <corrupt GNU_ABI_TAG>";
4743 OS << " OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI;
4746 case ELF::NT_GNU_BUILD_ID: {
4747 OS << " Build ID: " << getGNUBuildId(Desc);
4750 case ELF::NT_GNU_GOLD_VERSION:
4751 OS << " Version: " << getGNUGoldVersion(Desc);
4753 case ELF::NT_GNU_PROPERTY_TYPE_0:
4754 OS << " Properties:";
4755 for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
4756 OS << " " << Property << "\n";
4767 template <typename ELFT>
4768 static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
4772 case ELF::NT_AMD_AMDGPU_HSA_METADATA:
4775 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
4776 case ELF::NT_AMD_AMDGPU_ISA:
4779 std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
4788 template <typename ELFT>
4789 static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
4793 case ELF::NT_AMDGPU_METADATA: {
4794 auto MsgPackString =
4795 StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
4796 msgpack::Document MsgPackDoc;
4797 if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false))
4798 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
4800 AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true);
4801 if (!Verifier.verify(MsgPackDoc.getRoot()))
4802 return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
4804 std::string HSAMetadataString;
4805 raw_string_ostream StrOS(HSAMetadataString);
4806 MsgPackDoc.toYAML(StrOS);
4808 return {"AMDGPU Metadata", StrOS.str()};
4813 struct CoreFileMapping {
4814 uint64_t Start, End, Offset;
4820 std::vector<CoreFileMapping> Mappings;
4823 static Expected<CoreNote> readCoreNote(DataExtractor Desc) {
4824 // Expected format of the NT_FILE note description:
4825 // 1. # of file mappings (call it N)
4827 // 3. N (start, end, offset) triples
4828 // 4. N packed filenames (null delimited)
4829 // Each field is an Elf_Addr, except for filenames which are char* strings.
4832 const int Bytes = Desc.getAddressSize();
4834 if (!Desc.isValidOffsetForAddress(2))
4835 return createStringError(object_error::parse_failed,
4836 "malformed note: header too short");
4837 if (Desc.getData().back() != 0)
4838 return createStringError(object_error::parse_failed,
4839 "malformed note: not NUL terminated");
4841 uint64_t DescOffset = 0;
4842 uint64_t FileCount = Desc.getAddress(&DescOffset);
4843 Ret.PageSize = Desc.getAddress(&DescOffset);
4845 if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes))
4846 return createStringError(object_error::parse_failed,
4847 "malformed note: too short for number of files");
4849 uint64_t FilenamesOffset = 0;
4850 DataExtractor Filenames(
4851 Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes),
4852 Desc.isLittleEndian(), Desc.getAddressSize());
4854 Ret.Mappings.resize(FileCount);
4855 for (CoreFileMapping &Mapping : Ret.Mappings) {
4856 if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1))
4857 return createStringError(object_error::parse_failed,
4858 "malformed note: too few filenames");
4859 Mapping.Start = Desc.getAddress(&DescOffset);
4860 Mapping.End = Desc.getAddress(&DescOffset);
4861 Mapping.Offset = Desc.getAddress(&DescOffset);
4862 Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset);
4868 template <typename ELFT>
4869 static void printCoreNote(raw_ostream &OS, const CoreNote &Note) {
4870 // Length of "0x<address>" string.
4871 const int FieldWidth = ELFT::Is64Bits ? 18 : 10;
4873 OS << " Page size: " << format_decimal(Note.PageSize, 0) << '\n';
4874 OS << " " << right_justify("Start", FieldWidth) << " "
4875 << right_justify("End", FieldWidth) << " "
4876 << right_justify("Page Offset", FieldWidth) << '\n';
4877 for (const CoreFileMapping &Mapping : Note.Mappings) {
4878 OS << " " << format_hex(Mapping.Start, FieldWidth) << " "
4879 << format_hex(Mapping.End, FieldWidth) << " "
4880 << format_hex(Mapping.Offset, FieldWidth) << "\n "
4881 << Mapping.Filename << '\n';
4885 template <class ELFT>
4886 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
4887 auto PrintHeader = [&](const typename ELFT::Off Offset,
4888 const typename ELFT::Addr Size) {
4889 OS << "Displaying notes found at file offset " << format_hex(Offset, 10)
4890 << " with length " << format_hex(Size, 10) << ":\n"
4891 << " Owner Data size \tDescription\n";
4894 auto ProcessNote = [&](const Elf_Note &Note) {
4895 StringRef Name = Note.getName();
4896 ArrayRef<uint8_t> Descriptor = Note.getDesc();
4897 Elf_Word Type = Note.getType();
4899 // Print the note owner/type.
4900 OS << " " << left_justify(Name, 20) << ' '
4901 << format_hex(Descriptor.size(), 10) << '\t';
4902 if (Name == "GNU") {
4903 OS << getGNUNoteTypeName(Type) << '\n';
4904 } else if (Name == "FreeBSD") {
4905 OS << getFreeBSDNoteTypeName(Type) << '\n';
4906 } else if (Name == "AMD") {
4907 OS << getAMDNoteTypeName(Type) << '\n';
4908 } else if (Name == "AMDGPU") {
4909 OS << getAMDGPUNoteTypeName(Type) << '\n';
4911 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE
4912 ? getCoreNoteTypeName(Type)
4913 : getGenericNoteTypeName(Type);
4914 if (!NoteType.empty())
4915 OS << NoteType << '\n';
4917 OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n";
4920 // Print the description, or fallback to printing raw bytes for unknown
4922 if (Name == "GNU") {
4923 printGNUNote<ELFT>(OS, Type, Descriptor);
4924 } else if (Name == "AMD") {
4925 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
4926 if (!N.Type.empty())
4927 OS << " " << N.Type << ":\n " << N.Value << '\n';
4928 } else if (Name == "AMDGPU") {
4929 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
4930 if (!N.Type.empty())
4931 OS << " " << N.Type << ":\n " << N.Value << '\n';
4932 } else if (Name == "CORE") {
4933 if (Type == ELF::NT_FILE) {
4934 DataExtractor DescExtractor(Descriptor,
4935 ELFT::TargetEndianness == support::little,
4937 Expected<CoreNote> Note = readCoreNote(DescExtractor);
4939 printCoreNote<ELFT>(OS, *Note);
4941 reportWarning(Note.takeError(), this->FileName);
4943 } else if (!Descriptor.empty()) {
4944 OS << " description data:";
4945 for (uint8_t B : Descriptor)
4946 OS << " " << format("%02x", B);
4951 ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
4952 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) {
4953 for (const auto &S : Sections) {
4954 if (S.sh_type != SHT_NOTE)
4956 PrintHeader(S.sh_offset, S.sh_size);
4957 Error Err = Error::success();
4958 for (auto Note : Obj->notes(S, Err))
4961 reportError(std::move(Err), this->FileName);
4964 for (const auto &P :
4965 unwrapOrError(this->FileName, Obj->program_headers())) {
4966 if (P.p_type != PT_NOTE)
4968 PrintHeader(P.p_offset, P.p_filesz);
4969 Error Err = Error::success();
4970 for (auto Note : Obj->notes(P, Err))
4973 reportError(std::move(Err), this->FileName);
4978 template <class ELFT>
4979 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
4980 OS << "printELFLinkerOptions not implemented!\n";
4983 template <class ELFT>
4984 void GNUStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) {
4985 OS << "printDependentLibs not implemented!\n";
4988 // Used for printing section names in places where possible errors can be
4990 static StringRef getSectionName(const SectionRef &Sec) {
4991 Expected<StringRef> NameOrErr = Sec.getName();
4994 consumeError(NameOrErr.takeError());
4998 // Used for printing symbol names in places where possible errors can be
5000 static std::string getSymbolName(const ELFSymbolRef &Sym) {
5001 Expected<StringRef> NameOrErr = Sym.getName();
5003 return maybeDemangle(*NameOrErr);
5004 consumeError(NameOrErr.takeError());
5008 template <class ELFT>
5009 void DumpStyle<ELFT>::printFunctionStackSize(
5010 const ELFObjectFile<ELFT> *Obj, uint64_t SymValue, SectionRef FunctionSec,
5011 const StringRef SectionName, DataExtractor Data, uint64_t *Offset) {
5012 // This function ignores potentially erroneous input, unless it is directly
5013 // related to stack size reporting.
5015 for (const ELFSymbolRef &Symbol : Obj->symbols()) {
5016 Expected<uint64_t> SymAddrOrErr = Symbol.getAddress();
5017 if (!SymAddrOrErr) {
5018 consumeError(SymAddrOrErr.takeError());
5021 if (Symbol.getELFType() == ELF::STT_FUNC && *SymAddrOrErr == SymValue) {
5022 // Check if the symbol is in the right section.
5023 if (FunctionSec.containsSymbol(Symbol)) {
5030 std::string FuncName = "?";
5031 // A valid SymbolRef has a non-null object file pointer.
5032 if (FuncSym.BasicSymbolRef::getObject())
5033 FuncName = getSymbolName(FuncSym);
5036 createError("could not identify function symbol for stack size entry"),
5037 Obj->getFileName());
5039 // Extract the size. The expectation is that Offset is pointing to the right
5040 // place, i.e. past the function address.
5041 uint64_t PrevOffset = *Offset;
5042 uint64_t StackSize = Data.getULEB128(Offset);
5043 // getULEB128() does not advance Offset if it is not able to extract a valid
5045 if (*Offset == PrevOffset)
5047 createStringError(object_error::parse_failed,
5048 "could not extract a valid stack size in section %s",
5049 SectionName.data()),
5050 Obj->getFileName());
5052 printStackSizeEntry(StackSize, FuncName);
5055 template <class ELFT>
5056 void GNUStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
5058 OS << format_decimal(Size, 11);
5060 OS << FuncName << "\n";
5063 template <class ELFT>
5064 void DumpStyle<ELFT>::printStackSize(const ELFObjectFile<ELFT> *Obj,
5065 RelocationRef Reloc,
5066 SectionRef FunctionSec,
5067 const StringRef &StackSizeSectionName,
5068 const RelocationResolver &Resolver,
5069 DataExtractor Data) {
5070 // This function ignores potentially erroneous input, unless it is directly
5071 // related to stack size reporting.
5072 object::symbol_iterator RelocSym = Reloc.getSymbol();
5073 uint64_t RelocSymValue = 0;
5074 StringRef FileStr = Obj->getFileName();
5075 if (RelocSym != Obj->symbol_end()) {
5076 // Ensure that the relocation symbol is in the function section, i.e. the
5077 // section where the functions whose stack sizes we are reporting are
5079 auto SectionOrErr = RelocSym->getSection();
5080 if (!SectionOrErr) {
5082 createError("cannot identify the section for relocation symbol '" +
5083 getSymbolName(*RelocSym) + "'"),
5085 consumeError(SectionOrErr.takeError());
5086 } else if (*SectionOrErr != FunctionSec) {
5087 reportWarning(createError("relocation symbol '" +
5088 getSymbolName(*RelocSym) +
5089 "' is not in the expected section"),
5091 // Pretend that the symbol is in the correct section and report its
5092 // stack size anyway.
5093 FunctionSec = **SectionOrErr;
5096 Expected<uint64_t> RelocSymValueOrErr = RelocSym->getValue();
5097 if (RelocSymValueOrErr)
5098 RelocSymValue = *RelocSymValueOrErr;
5100 consumeError(RelocSymValueOrErr.takeError());
5103 uint64_t Offset = Reloc.getOffset();
5104 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1))
5106 createStringError(object_error::parse_failed,
5107 "found invalid relocation offset into section %s "
5108 "while trying to extract a stack size entry",
5109 StackSizeSectionName.data()),
5112 uint64_t Addend = Data.getAddress(&Offset);
5113 uint64_t SymValue = Resolver(Reloc, RelocSymValue, Addend);
5114 this->printFunctionStackSize(Obj, SymValue, FunctionSec, StackSizeSectionName,
5118 template <class ELFT>
5119 void DumpStyle<ELFT>::printNonRelocatableStackSizes(
5120 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) {
5121 // This function ignores potentially erroneous input, unless it is directly
5122 // related to stack size reporting.
5123 const ELFFile<ELFT> *EF = Obj->getELFFile();
5124 StringRef FileStr = Obj->getFileName();
5125 for (const SectionRef &Sec : Obj->sections()) {
5126 StringRef SectionName = getSectionName(Sec);
5127 if (SectionName != ".stack_sizes")
5130 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl());
5131 ArrayRef<uint8_t> Contents =
5132 unwrapOrError(this->FileName, EF->getSectionContents(ElfSec));
5133 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr));
5134 // A .stack_sizes section header's sh_link field is supposed to point
5135 // to the section that contains the functions whose stack sizes are
5137 const Elf_Shdr *FunctionELFSec =
5138 unwrapOrError(this->FileName, EF->getSection(ElfSec->sh_link));
5139 uint64_t Offset = 0;
5140 while (Offset < Contents.size()) {
5141 // The function address is followed by a ULEB representing the stack
5142 // size. Check for an extra byte before we try to process the entry.
5143 if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) {
5146 object_error::parse_failed,
5147 "section %s ended while trying to extract a stack size entry",
5148 SectionName.data()),
5151 uint64_t SymValue = Data.getAddress(&Offset);
5152 printFunctionStackSize(Obj, SymValue, Obj->toSectionRef(FunctionELFSec),
5153 SectionName, Data, &Offset);
5158 template <class ELFT>
5159 void DumpStyle<ELFT>::printRelocatableStackSizes(
5160 const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) {
5161 const ELFFile<ELFT> *EF = Obj->getELFFile();
5163 // Build a map between stack size sections and their corresponding relocation
5165 llvm::MapVector<SectionRef, SectionRef> StackSizeRelocMap;
5166 const SectionRef NullSection{};
5168 for (const SectionRef &Sec : Obj->sections()) {
5169 StringRef SectionName;
5170 if (Expected<StringRef> NameOrErr = Sec.getName())
5171 SectionName = *NameOrErr;
5173 consumeError(NameOrErr.takeError());
5175 // A stack size section that we haven't encountered yet is mapped to the
5176 // null section until we find its corresponding relocation section.
5177 if (SectionName == ".stack_sizes")
5178 if (StackSizeRelocMap.count(Sec) == 0) {
5179 StackSizeRelocMap[Sec] = NullSection;
5183 // Check relocation sections if they are relocating contents of a
5184 // stack sizes section.
5185 const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl());
5186 uint32_t SectionType = ElfSec->sh_type;
5187 if (SectionType != ELF::SHT_RELA && SectionType != ELF::SHT_REL)
5190 Expected<section_iterator> RelSecOrErr = Sec.getRelocatedSection();
5192 reportError(createStringError(object_error::parse_failed,
5193 "%s: failed to get a relocated section: %s",
5195 toString(RelSecOrErr.takeError()).c_str()),
5196 Obj->getFileName());
5198 const Elf_Shdr *ContentsSec =
5199 Obj->getSection((*RelSecOrErr)->getRawDataRefImpl());
5200 Expected<StringRef> ContentsSectionNameOrErr =
5201 EF->getSectionName(ContentsSec);
5202 if (!ContentsSectionNameOrErr) {
5203 consumeError(ContentsSectionNameOrErr.takeError());
5206 if (*ContentsSectionNameOrErr != ".stack_sizes")
5208 // Insert a mapping from the stack sizes section to its relocation section.
5209 StackSizeRelocMap[Obj->toSectionRef(ContentsSec)] = Sec;
5212 for (const auto &StackSizeMapEntry : StackSizeRelocMap) {
5214 const SectionRef &StackSizesSec = StackSizeMapEntry.first;
5215 const SectionRef &RelocSec = StackSizeMapEntry.second;
5217 // Warn about stack size sections without a relocation section.
5218 StringRef StackSizeSectionName = getSectionName(StackSizesSec);
5219 if (RelocSec == NullSection) {
5220 reportWarning(createError("section " + StackSizeSectionName +
5221 " does not have a corresponding "
5222 "relocation section"),
5223 Obj->getFileName());
5227 // A .stack_sizes section header's sh_link field is supposed to point
5228 // to the section that contains the functions whose stack sizes are
5230 const Elf_Shdr *StackSizesELFSec =
5231 Obj->getSection(StackSizesSec.getRawDataRefImpl());
5232 const SectionRef FunctionSec = Obj->toSectionRef(unwrapOrError(
5233 this->FileName, EF->getSection(StackSizesELFSec->sh_link)));
5235 bool (*IsSupportedFn)(uint64_t);
5236 RelocationResolver Resolver;
5237 std::tie(IsSupportedFn, Resolver) = getRelocationResolver(*Obj);
5238 auto Contents = unwrapOrError(this->FileName, StackSizesSec.getContents());
5239 DataExtractor Data(Contents, Obj->isLittleEndian(), sizeof(Elf_Addr));
5240 for (const RelocationRef &Reloc : RelocSec.relocations()) {
5241 if (!IsSupportedFn || !IsSupportedFn(Reloc.getType()))
5242 reportError(createStringError(
5243 object_error::parse_failed,
5244 "unsupported relocation type in section %s: %s",
5245 getSectionName(RelocSec).data(),
5246 EF->getRelocationTypeName(Reloc.getType()).data()),
5247 Obj->getFileName());
5248 this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName,
5254 template <class ELFT>
5255 void GNUStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) {
5256 bool HeaderHasBeenPrinted = false;
5257 auto PrintHeader = [&]() {
5258 if (HeaderHasBeenPrinted)
5260 OS << "\nStack Sizes:\n";
5265 HeaderHasBeenPrinted = true;
5268 // For non-relocatable objects, look directly for sections whose name starts
5269 // with .stack_sizes and process the contents.
5270 if (Obj->isRelocatableObject())
5271 this->printRelocatableStackSizes(Obj, PrintHeader);
5273 this->printNonRelocatableStackSizes(Obj, PrintHeader);
5276 template <class ELFT>
5277 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
5278 size_t Bias = ELFT::Is64Bits ? 8 : 0;
5279 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
5281 OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias);
5282 OS.PadToColumn(11 + Bias);
5283 OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)";
5284 OS.PadToColumn(22 + Bias);
5285 OS << format_hex_no_prefix(*E, 8 + Bias);
5286 OS.PadToColumn(31 + 2 * Bias);
5287 OS << Purpose << "\n";
5290 OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n");
5291 OS << " Canonical gp value: "
5292 << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n";
5294 OS << " Reserved entries:\n";
5296 OS << " Address Access Initial Purpose\n";
5298 OS << " Address Access Initial Purpose\n";
5299 PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver");
5300 if (Parser.getGotModulePointer())
5301 PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)");
5303 if (!Parser.getLocalEntries().empty()) {
5305 OS << " Local entries:\n";
5307 OS << " Address Access Initial\n";
5309 OS << " Address Access Initial\n";
5310 for (auto &E : Parser.getLocalEntries())
5314 if (Parser.IsStatic)
5317 if (!Parser.getGlobalEntries().empty()) {
5319 OS << " Global entries:\n";
5321 OS << " Address Access Initial Sym.Val."
5322 << " Type Ndx Name\n";
5324 OS << " Address Access Initial Sym.Val. Type Ndx Name\n";
5325 for (auto &E : Parser.getGlobalEntries()) {
5326 const Elf_Sym *Sym = Parser.getGotSym(&E);
5327 std::string SymName = this->dumper()->getFullSymbolName(
5328 Sym, this->dumper()->getDynamicStringTable(), false);
5331 OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias));
5332 OS.PadToColumn(11 + Bias);
5333 OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)";
5334 OS.PadToColumn(22 + Bias);
5335 OS << to_string(format_hex_no_prefix(E, 8 + Bias));
5336 OS.PadToColumn(31 + 2 * Bias);
5337 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
5338 OS.PadToColumn(40 + 3 * Bias);
5339 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
5340 OS.PadToColumn(48 + 3 * Bias);
5341 OS << getSymbolSectionNdx(Parser.Obj, Sym,
5342 this->dumper()->dynamic_symbols().begin());
5343 OS.PadToColumn(52 + 3 * Bias);
5344 OS << SymName << "\n";
5348 if (!Parser.getOtherEntries().empty())
5349 OS << "\n Number of TLS and multi-GOT entries "
5350 << Parser.getOtherEntries().size() << "\n";
5353 template <class ELFT>
5354 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
5355 size_t Bias = ELFT::Is64Bits ? 8 : 0;
5356 auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
5358 OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias);
5359 OS.PadToColumn(11 + Bias);
5360 OS << format_hex_no_prefix(*E, 8 + Bias);
5361 OS.PadToColumn(20 + 2 * Bias);
5362 OS << Purpose << "\n";
5365 OS << "PLT GOT:\n\n";
5367 OS << " Reserved entries:\n";
5368 OS << " Address Initial Purpose\n";
5369 PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver");
5370 if (Parser.getPltModulePointer())
5371 PrintEntry(Parser.getPltModulePointer(), "Module pointer");
5373 if (!Parser.getPltEntries().empty()) {
5375 OS << " Entries:\n";
5376 OS << " Address Initial Sym.Val. Type Ndx Name\n";
5377 for (auto &E : Parser.getPltEntries()) {
5378 const Elf_Sym *Sym = Parser.getPltSym(&E);
5379 std::string SymName = this->dumper()->getFullSymbolName(
5380 Sym, this->dumper()->getDynamicStringTable(), false);
5383 OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias));
5384 OS.PadToColumn(11 + Bias);
5385 OS << to_string(format_hex_no_prefix(E, 8 + Bias));
5386 OS.PadToColumn(20 + 2 * Bias);
5387 OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
5388 OS.PadToColumn(29 + 3 * Bias);
5389 OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
5390 OS.PadToColumn(37 + 3 * Bias);
5391 OS << getSymbolSectionNdx(Parser.Obj, Sym,
5392 this->dumper()->dynamic_symbols().begin());
5393 OS.PadToColumn(41 + 3 * Bias);
5394 OS << SymName << "\n";
5399 template <class ELFT>
5400 void GNUStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) {
5401 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
5402 const Elf_Shdr *Shdr =
5403 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags");
5407 ArrayRef<uint8_t> Sec =
5408 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
5409 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>))
5410 reportError(createError(".MIPS.abiflags section has a wrong size"),
5411 ObjF->getFileName());
5413 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data());
5415 OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n";
5416 OS << "ISA: MIPS" << int(Flags->isa_level);
5417 if (Flags->isa_rev > 1)
5418 OS << "r" << int(Flags->isa_rev);
5420 OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n";
5421 OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n";
5422 OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n";
5423 OS << "FP ABI: " << printEnum(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType))
5425 OS << "ISA Extension: "
5426 << printEnum(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n";
5427 if (Flags->ases == 0)
5428 OS << "ASEs: None\n";
5430 // FIXME: Print each flag on a separate line.
5431 OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags))
5433 OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n";
5434 OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n";
5438 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
5439 const Elf_Ehdr *E = Obj->getHeader();
5441 DictScope D(W, "ElfHeader");
5443 DictScope D(W, "Ident");
5444 W.printBinary("Magic", makeArrayRef(E->e_ident).slice(ELF::EI_MAG0, 4));
5445 W.printEnum("Class", E->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
5446 W.printEnum("DataEncoding", E->e_ident[ELF::EI_DATA],
5447 makeArrayRef(ElfDataEncoding));
5448 W.printNumber("FileVersion", E->e_ident[ELF::EI_VERSION]);
5450 auto OSABI = makeArrayRef(ElfOSABI);
5451 if (E->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
5452 E->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
5453 switch (E->e_machine) {
5454 case ELF::EM_AMDGPU:
5455 OSABI = makeArrayRef(AMDGPUElfOSABI);
5458 OSABI = makeArrayRef(ARMElfOSABI);
5460 case ELF::EM_TI_C6000:
5461 OSABI = makeArrayRef(C6000ElfOSABI);
5465 W.printEnum("OS/ABI", E->e_ident[ELF::EI_OSABI], OSABI);
5466 W.printNumber("ABIVersion", E->e_ident[ELF::EI_ABIVERSION]);
5467 W.printBinary("Unused", makeArrayRef(E->e_ident).slice(ELF::EI_PAD));
5470 W.printEnum("Type", E->e_type, makeArrayRef(ElfObjectFileType));
5471 W.printEnum("Machine", E->e_machine, makeArrayRef(ElfMachineType));
5472 W.printNumber("Version", E->e_version);
5473 W.printHex("Entry", E->e_entry);
5474 W.printHex("ProgramHeaderOffset", E->e_phoff);
5475 W.printHex("SectionHeaderOffset", E->e_shoff);
5476 if (E->e_machine == EM_MIPS)
5477 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderMipsFlags),
5478 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
5479 unsigned(ELF::EF_MIPS_MACH));
5480 else if (E->e_machine == EM_AMDGPU)
5481 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags),
5482 unsigned(ELF::EF_AMDGPU_MACH));
5483 else if (E->e_machine == EM_RISCV)
5484 W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
5486 W.printFlags("Flags", E->e_flags);
5487 W.printNumber("HeaderSize", E->e_ehsize);
5488 W.printNumber("ProgramHeaderEntrySize", E->e_phentsize);
5489 W.printNumber("ProgramHeaderCount", E->e_phnum);
5490 W.printNumber("SectionHeaderEntrySize", E->e_shentsize);
5491 W.printString("SectionHeaderCount",
5492 getSectionHeadersNumString(Obj, this->FileName));
5493 W.printString("StringTableSectionIndex",
5494 getSectionHeaderTableIndexString(Obj, this->FileName));
5498 template <class ELFT>
5499 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) {
5500 DictScope Lists(W, "Groups");
5501 std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName);
5502 DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
5503 for (const GroupSection &G : V) {
5504 DictScope D(W, "Group");
5505 W.printNumber("Name", G.Name, G.ShName);
5506 W.printNumber("Index", G.Index);
5507 W.printNumber("Link", G.Link);
5508 W.printNumber("Info", G.Info);
5509 W.printHex("Type", getGroupType(G.Type), G.Type);
5510 W.startLine() << "Signature: " << G.Signature << "\n";
5512 ListScope L(W, "Section(s) in group");
5513 for (const GroupMember &GM : G.Members) {
5514 const GroupSection *MainGroup = Map[GM.Index];
5515 if (MainGroup != &G) {
5517 errs() << "Error: " << GM.Name << " (" << GM.Index
5518 << ") in a group " + G.Name + " (" << G.Index
5519 << ") is already in a group " + MainGroup->Name + " ("
5520 << MainGroup->Index << ")\n";
5524 W.startLine() << GM.Name << " (" << GM.Index << ")\n";
5529 W.startLine() << "There are no group sections in the file.\n";
5532 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) {
5533 ListScope D(W, "Relocations");
5535 int SectionNumber = -1;
5536 for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
5539 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA &&
5540 Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL &&
5541 Sec.sh_type != ELF::SHT_ANDROID_RELA &&
5542 Sec.sh_type != ELF::SHT_ANDROID_RELR)
5545 StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec));
5547 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
5550 printRelocations(&Sec, Obj);
5553 W.startLine() << "}\n";
5557 template <class ELFT>
5558 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) {
5559 const Elf_Shdr *SymTab =
5560 unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
5562 switch (Sec->sh_type) {
5564 for (const Elf_Rel &R : unwrapOrError(this->FileName, Obj->rels(Sec))) {
5566 Rela.r_offset = R.r_offset;
5567 Rela.r_info = R.r_info;
5569 printRelocation(Obj, Rela, SymTab);
5573 for (const Elf_Rela &R : unwrapOrError(this->FileName, Obj->relas(Sec)))
5574 printRelocation(Obj, R, SymTab);
5577 case ELF::SHT_ANDROID_RELR: {
5578 Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(Sec));
5579 if (opts::RawRelr) {
5580 for (const Elf_Relr &R : Relrs)
5581 W.startLine() << W.hex(R) << "\n";
5583 std::vector<Elf_Rela> RelrRelas =
5584 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
5585 for (const Elf_Rela &R : RelrRelas)
5586 printRelocation(Obj, R, SymTab);
5590 case ELF::SHT_ANDROID_REL:
5591 case ELF::SHT_ANDROID_RELA:
5592 for (const Elf_Rela &R :
5593 unwrapOrError(this->FileName, Obj->android_relas(Sec)))
5594 printRelocation(Obj, R, SymTab);
5599 template <class ELFT>
5600 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel,
5601 const Elf_Shdr *SymTab) {
5602 SmallString<32> RelocName;
5603 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
5604 std::string TargetName;
5605 const Elf_Sym *Sym =
5606 unwrapOrError(this->FileName, Obj->getRelocationSymbol(&Rel, SymTab));
5607 if (Sym && Sym->getType() == ELF::STT_SECTION) {
5608 const Elf_Shdr *Sec = unwrapOrError(
5610 Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
5611 TargetName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
5613 StringRef StrTable =
5614 unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*SymTab));
5615 TargetName = this->dumper()->getFullSymbolName(
5616 Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
5619 if (opts::ExpandRelocs) {
5620 DictScope Group(W, "Relocation");
5621 W.printHex("Offset", Rel.r_offset);
5622 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
5623 W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-",
5624 Rel.getSymbol(Obj->isMips64EL()));
5625 W.printHex("Addend", Rel.r_addend);
5627 raw_ostream &OS = W.startLine();
5628 OS << W.hex(Rel.r_offset) << " " << RelocName << " "
5629 << (!TargetName.empty() ? TargetName : "-") << " " << W.hex(Rel.r_addend)
5634 template <class ELFT>
5635 void LLVMStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
5636 ListScope SectionsD(W, "Sections");
5638 int SectionIndex = -1;
5639 ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
5640 const ELFObjectFile<ELFT> *ElfObj = this->dumper()->getElfObject();
5641 std::vector<EnumEntry<unsigned>> FlagsList =
5642 getSectionFlagsForTarget(Obj->getHeader()->e_machine);
5643 for (const Elf_Shdr &Sec : Sections) {
5644 StringRef Name = unwrapOrError(
5645 ElfObj->getFileName(), Obj->getSectionName(&Sec, this->WarningHandler));
5646 DictScope SectionD(W, "Section");
5647 W.printNumber("Index", ++SectionIndex);
5648 W.printNumber("Name", Name, Sec.sh_name);
5651 object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type),
5653 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList));
5654 W.printHex("Address", Sec.sh_addr);
5655 W.printHex("Offset", Sec.sh_offset);
5656 W.printNumber("Size", Sec.sh_size);
5657 W.printNumber("Link", Sec.sh_link);
5658 W.printNumber("Info", Sec.sh_info);
5659 W.printNumber("AddressAlignment", Sec.sh_addralign);
5660 W.printNumber("EntrySize", Sec.sh_entsize);
5662 if (opts::SectionRelocations) {
5663 ListScope D(W, "Relocations");
5664 printRelocations(&Sec, Obj);
5667 if (opts::SectionSymbols) {
5668 ListScope D(W, "Symbols");
5669 const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec();
5670 StringRef StrTable =
5671 unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*Symtab));
5673 for (const Elf_Sym &Sym :
5674 unwrapOrError(this->FileName, Obj->symbols(Symtab))) {
5675 const Elf_Shdr *SymSec = unwrapOrError(
5677 Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable()));
5681 unwrapOrError(this->FileName, Obj->symbols(Symtab)).begin(),
5682 StrTable, false, false);
5686 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) {
5687 ArrayRef<uint8_t> Data =
5688 unwrapOrError(this->FileName, Obj->getSectionContents(&Sec));
5691 StringRef(reinterpret_cast<const char *>(Data.data()), Data.size()));
5696 template <class ELFT>
5697 void LLVMStyle<ELFT>::printSymbolSection(const Elf_Sym *Symbol,
5698 const Elf_Sym *First) {
5699 Expected<unsigned> SectionIndex =
5700 this->dumper()->getSymbolSectionIndex(Symbol, First);
5701 if (!SectionIndex) {
5702 assert(Symbol->st_shndx == SHN_XINDEX &&
5703 "getSymbolSectionIndex should only fail due to an invalid "
5704 "SHT_SYMTAB_SHNDX table/reference");
5705 this->reportUniqueWarning(SectionIndex.takeError());
5706 W.printHex("Section", "Reserved", SHN_XINDEX);
5710 Expected<StringRef> SectionName =
5711 this->dumper()->getSymbolSectionName(Symbol, *SectionIndex);
5713 this->reportUniqueWarning(SectionName.takeError());
5714 W.printHex("Section", "<?>", *SectionIndex);
5716 W.printHex("Section", *SectionName, *SectionIndex);
5720 template <class ELFT>
5721 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
5722 const Elf_Sym *First, StringRef StrTable,
5724 bool /*NonVisibilityBitsUsed*/) {
5725 std::string FullSymbolName =
5726 this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
5727 unsigned char SymbolType = Symbol->getType();
5729 DictScope D(W, "Symbol");
5730 W.printNumber("Name", FullSymbolName, Symbol->st_name);
5731 W.printHex("Value", Symbol->st_value);
5732 W.printNumber("Size", Symbol->st_size);
5733 W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
5734 if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
5735 SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
5736 W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes));
5738 W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes));
5739 if (Symbol->st_other == 0)
5740 // Usually st_other flag is zero. Do not pollute the output
5741 // by flags enumeration in that case.
5742 W.printNumber("Other", 0);
5744 std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags),
5745 std::end(ElfSymOtherFlags));
5746 if (Obj->getHeader()->e_machine == EM_MIPS) {
5747 // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16
5748 // flag overlapped with other ST_MIPS_xxx flags. So consider both
5749 // cases separately.
5750 if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16)
5751 SymOtherFlags.insert(SymOtherFlags.end(),
5752 std::begin(ElfMips16SymOtherFlags),
5753 std::end(ElfMips16SymOtherFlags));
5755 SymOtherFlags.insert(SymOtherFlags.end(),
5756 std::begin(ElfMipsSymOtherFlags),
5757 std::end(ElfMipsSymOtherFlags));
5759 W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u);
5761 printSymbolSection(Symbol, First);
5764 template <class ELFT>
5765 void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
5766 bool PrintDynamicSymbols) {
5769 if (PrintDynamicSymbols)
5770 printDynamicSymbols(Obj);
5773 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) {
5774 ListScope Group(W, "Symbols");
5775 this->dumper()->printSymbolsHelper(false);
5778 template <class ELFT>
5779 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) {
5780 ListScope Group(W, "DynamicSymbols");
5781 this->dumper()->printSymbolsHelper(true);
5784 template <class ELFT> void LLVMStyle<ELFT>::printDynamic(const ELFFile<ELFT> *Obj) {
5785 Elf_Dyn_Range Table = this->dumper()->dynamic_table();
5789 raw_ostream &OS = W.getOStream();
5790 W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n";
5792 bool Is64 = ELFT::Is64Bits;
5794 W.startLine() << " Tag Type Name/Value\n";
5796 W.startLine() << " Tag Type Name/Value\n";
5797 for (auto Entry : Table) {
5798 uintX_t Tag = Entry.getTag();
5799 W.startLine() << " " << format_hex(Tag, Is64 ? 18 : 10, true) << " "
5800 << format("%-21s", Obj->getDynamicTagAsString(Tag).c_str());
5801 this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
5804 W.startLine() << "]\n";
5807 template <class ELFT>
5808 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
5809 const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
5810 const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
5811 const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
5812 const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
5813 if (DynRelRegion.Size && DynRelaRegion.Size)
5814 report_fatal_error("There are both REL and RELA dynamic relocations");
5815 W.startLine() << "Dynamic Relocations {\n";
5817 if (DynRelaRegion.Size > 0)
5818 for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
5819 printDynamicRelocation(Obj, Rela);
5821 for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
5823 Rela.r_offset = Rel.r_offset;
5824 Rela.r_info = Rel.r_info;
5826 printDynamicRelocation(Obj, Rela);
5828 if (DynRelrRegion.Size > 0) {
5829 Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
5830 std::vector<Elf_Rela> RelrRelas =
5831 unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
5832 for (const Elf_Rela &Rela : RelrRelas)
5833 printDynamicRelocation(Obj, Rela);
5835 if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela))
5836 for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
5837 printDynamicRelocation(Obj, Rela);
5839 for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
5841 Rela.r_offset = Rel.r_offset;
5842 Rela.r_info = Rel.r_info;
5844 printDynamicRelocation(Obj, Rela);
5847 W.startLine() << "}\n";
5850 template <class ELFT>
5851 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) {
5852 SmallString<32> RelocName;
5853 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
5854 std::string SymbolName =
5855 getSymbolForReloc(Obj, this->FileName, this->dumper(), Rel).Name;
5857 if (opts::ExpandRelocs) {
5858 DictScope Group(W, "Relocation");
5859 W.printHex("Offset", Rel.r_offset);
5860 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
5861 W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-");
5862 W.printHex("Addend", Rel.r_addend);
5864 raw_ostream &OS = W.startLine();
5865 OS << W.hex(Rel.r_offset) << " " << RelocName << " "
5866 << (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Rel.r_addend)
5871 template <class ELFT>
5872 void LLVMStyle<ELFT>::printProgramHeaders(
5873 const ELFO *Obj, bool PrintProgramHeaders,
5874 cl::boolOrDefault PrintSectionMapping) {
5875 if (PrintProgramHeaders)
5876 printProgramHeaders(Obj);
5877 if (PrintSectionMapping == cl::BOU_TRUE)
5878 printSectionMapping(Obj);
5881 template <class ELFT>
5882 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
5883 ListScope L(W, "ProgramHeaders");
5885 for (const Elf_Phdr &Phdr :
5886 unwrapOrError(this->FileName, Obj->program_headers())) {
5887 DictScope P(W, "ProgramHeader");
5889 getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type),
5891 W.printHex("Offset", Phdr.p_offset);
5892 W.printHex("VirtualAddress", Phdr.p_vaddr);
5893 W.printHex("PhysicalAddress", Phdr.p_paddr);
5894 W.printNumber("FileSize", Phdr.p_filesz);
5895 W.printNumber("MemSize", Phdr.p_memsz);
5896 W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags));
5897 W.printNumber("Alignment", Phdr.p_align);
5901 template <class ELFT>
5902 void LLVMStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
5903 const Elf_Shdr *Sec) {
5904 ListScope SS(W, "VersionSymbols");
5909 ArrayRef<Elf_Sym> Syms;
5910 Expected<ArrayRef<Elf_Versym>> VerTableOrErr =
5911 this->dumper()->getVersionTable(Sec, &Syms, &StrTable);
5912 if (!VerTableOrErr) {
5913 this->reportUniqueWarning(VerTableOrErr.takeError());
5917 if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size())
5920 for (size_t I = 0, E = Syms.size(); I < E; ++I) {
5921 DictScope S(W, "Symbol");
5922 W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION);
5923 W.printString("Name", this->dumper()->getFullSymbolName(
5924 &Syms[I], StrTable, /*IsDynamic=*/true));
5928 template <class ELFT>
5929 void LLVMStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
5930 const Elf_Shdr *Sec) {
5931 ListScope SD(W, "VersionDefinitions");
5935 Expected<std::vector<VerDef>> V = this->dumper()->getVersionDefinitions(Sec);
5937 this->reportUniqueWarning(V.takeError());
5941 for (const VerDef &D : *V) {
5942 DictScope Def(W, "Definition");
5943 W.printNumber("Version", D.Version);
5944 W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags));
5945 W.printNumber("Index", D.Ndx);
5946 W.printNumber("Hash", D.Hash);
5947 W.printString("Name", D.Name.c_str());
5949 "Predecessors", D.AuxV,
5950 [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); });
5954 template <class ELFT>
5955 void LLVMStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
5956 const Elf_Shdr *Sec) {
5957 ListScope SD(W, "VersionRequirements");
5961 Expected<std::vector<VerNeed>> V =
5962 this->dumper()->getVersionDependencies(Sec);
5964 this->reportUniqueWarning(V.takeError());
5968 for (const VerNeed &VN : *V) {
5969 DictScope Entry(W, "Dependency");
5970 W.printNumber("Version", VN.Version);
5971 W.printNumber("Count", VN.Cnt);
5972 W.printString("FileName", VN.File.c_str());
5974 ListScope L(W, "Entries");
5975 for (const VernAux &Aux : VN.AuxV) {
5976 DictScope Entry(W, "Entry");
5977 W.printNumber("Hash", Aux.Hash);
5978 W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags));
5979 W.printNumber("Index", Aux.Other);
5980 W.printString("Name", Aux.Name.c_str());
5985 template <class ELFT>
5986 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
5987 W.startLine() << "Hash Histogram not implemented!\n";
5990 template <class ELFT>
5991 void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
5992 ListScope L(W, "CGProfile");
5993 if (!this->dumper()->getDotCGProfileSec())
5995 auto CGProfile = unwrapOrError(
5996 this->FileName, Obj->template getSectionContentsAsArray<Elf_CGProfile>(
5997 this->dumper()->getDotCGProfileSec()));
5998 for (const Elf_CGProfile &CGPE : CGProfile) {
5999 DictScope D(W, "CGProfileEntry");
6002 unwrapOrError(this->FileName,
6003 this->dumper()->getStaticSymbolName(CGPE.cgp_from)),
6007 unwrapOrError(this->FileName,
6008 this->dumper()->getStaticSymbolName(CGPE.cgp_to)),
6010 W.printNumber("Weight", CGPE.cgp_weight);
6014 static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) {
6015 std::vector<uint64_t> Ret;
6016 const uint8_t *Cur = Data.begin();
6017 const uint8_t *End = Data.end();
6018 while (Cur != End) {
6021 Ret.push_back(decodeULEB128(Cur, &Size, End, &Err));
6023 return createError(Err);
6029 template <class ELFT>
6030 void LLVMStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
6031 ListScope L(W, "Addrsig");
6032 if (!this->dumper()->getDotAddrsigSec())
6034 ArrayRef<uint8_t> Contents = unwrapOrError(
6036 Obj->getSectionContents(this->dumper()->getDotAddrsigSec()));
6037 Expected<std::vector<uint64_t>> V = toULEB128Array(Contents);
6039 reportWarning(V.takeError(), this->FileName);
6043 for (uint64_t Sym : *V) {
6044 Expected<std::string> NameOrErr = this->dumper()->getStaticSymbolName(Sym);
6046 W.printNumber("Sym", *NameOrErr, Sym);
6049 reportWarning(NameOrErr.takeError(), this->FileName);
6050 W.printNumber("Sym", "<?>", Sym);
6054 template <typename ELFT>
6055 static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc,
6060 case ELF::NT_GNU_ABI_TAG: {
6061 const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
6062 if (!AbiTag.IsValid) {
6063 W.printString("ABI", "<corrupt GNU_ABI_TAG>");
6065 W.printString("OS", AbiTag.OSName);
6066 W.printString("ABI", AbiTag.ABI);
6070 case ELF::NT_GNU_BUILD_ID: {
6071 W.printString("Build ID", getGNUBuildId(Desc));
6074 case ELF::NT_GNU_GOLD_VERSION:
6075 W.printString("Version", getGNUGoldVersion(Desc));
6077 case ELF::NT_GNU_PROPERTY_TYPE_0:
6078 ListScope D(W, "Property");
6079 for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
6080 W.printString(Property);
6085 static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) {
6086 W.printNumber("Page Size", Note.PageSize);
6087 for (const CoreFileMapping &Mapping : Note.Mappings) {
6088 ListScope D(W, "Mapping");
6089 W.printHex("Start", Mapping.Start);
6090 W.printHex("End", Mapping.End);
6091 W.printHex("Offset", Mapping.Offset);
6092 W.printString("Filename", Mapping.Filename);
6096 template <class ELFT>
6097 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
6098 ListScope L(W, "Notes");
6100 auto PrintHeader = [&](const typename ELFT::Off Offset,
6101 const typename ELFT::Addr Size) {
6102 W.printHex("Offset", Offset);
6103 W.printHex("Size", Size);
6106 auto ProcessNote = [&](const Elf_Note &Note) {
6107 DictScope D2(W, "Note");
6108 StringRef Name = Note.getName();
6109 ArrayRef<uint8_t> Descriptor = Note.getDesc();
6110 Elf_Word Type = Note.getType();
6112 // Print the note owner/type.
6113 W.printString("Owner", Name);
6114 W.printHex("Data size", Descriptor.size());
6115 if (Name == "GNU") {
6116 W.printString("Type", getGNUNoteTypeName(Type));
6117 } else if (Name == "FreeBSD") {
6118 W.printString("Type", getFreeBSDNoteTypeName(Type));
6119 } else if (Name == "AMD") {
6120 W.printString("Type", getAMDNoteTypeName(Type));
6121 } else if (Name == "AMDGPU") {
6122 W.printString("Type", getAMDGPUNoteTypeName(Type));
6124 StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE
6125 ? getCoreNoteTypeName(Type)
6126 : getGenericNoteTypeName(Type);
6127 if (!NoteType.empty())
6128 W.printString("Type", NoteType);
6130 W.printString("Type",
6131 "Unknown (" + to_string(format_hex(Type, 10)) + ")");
6134 // Print the description, or fallback to printing raw bytes for unknown
6136 if (Name == "GNU") {
6137 printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W);
6138 } else if (Name == "AMD") {
6139 const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
6140 if (!N.Type.empty())
6141 W.printString(N.Type, N.Value);
6142 } else if (Name == "AMDGPU") {
6143 const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
6144 if (!N.Type.empty())
6145 W.printString(N.Type, N.Value);
6146 } else if (Name == "CORE") {
6147 if (Type == ELF::NT_FILE) {
6148 DataExtractor DescExtractor(Descriptor,
6149 ELFT::TargetEndianness == support::little,
6151 Expected<CoreNote> Note = readCoreNote(DescExtractor);
6153 printCoreNoteLLVMStyle(*Note, W);
6155 reportWarning(Note.takeError(), this->FileName);
6157 } else if (!Descriptor.empty()) {
6158 W.printBinaryBlock("Description data", Descriptor);
6162 ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
6163 if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) {
6164 for (const auto &S : Sections) {
6165 if (S.sh_type != SHT_NOTE)
6167 DictScope D(W, "NoteSection");
6168 PrintHeader(S.sh_offset, S.sh_size);
6169 Error Err = Error::success();
6170 for (auto Note : Obj->notes(S, Err))
6173 reportError(std::move(Err), this->FileName);
6176 for (const auto &P :
6177 unwrapOrError(this->FileName, Obj->program_headers())) {
6178 if (P.p_type != PT_NOTE)
6180 DictScope D(W, "NoteSection");
6181 PrintHeader(P.p_offset, P.p_filesz);
6182 Error Err = Error::success();
6183 for (auto Note : Obj->notes(P, Err))
6186 reportError(std::move(Err), this->FileName);
6191 template <class ELFT>
6192 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
6193 ListScope L(W, "LinkerOptions");
6196 for (const Elf_Shdr &Shdr : unwrapOrError(this->FileName, Obj->sections())) {
6198 if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS)
6201 ArrayRef<uint8_t> Contents =
6202 unwrapOrError(this->FileName, Obj->getSectionContents(&Shdr));
6203 if (Contents.empty())
6206 if (Contents.back() != 0) {
6207 reportWarning(createError("SHT_LLVM_LINKER_OPTIONS section at index " +
6210 "content is not null-terminated"),
6215 SmallVector<StringRef, 16> Strings;
6216 toStringRef(Contents.drop_back()).split(Strings, '\0');
6217 if (Strings.size() % 2 != 0) {
6220 "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) +
6221 " is broken: an incomplete "
6222 "key-value pair was found. The last possible key was: \"" +
6223 Strings.back() + "\""),
6228 for (size_t I = 0; I < Strings.size(); I += 2)
6229 W.printString(Strings[I], Strings[I + 1]);
6233 template <class ELFT>
6234 void LLVMStyle<ELFT>::printDependentLibs(const ELFFile<ELFT> *Obj) {
6235 ListScope L(W, "DependentLibs");
6237 auto Warn = [this](unsigned SecNdx, StringRef Msg) {
6238 this->reportUniqueWarning(
6239 createError("SHT_LLVM_DEPENDENT_LIBRARIES section at index " +
6240 Twine(SecNdx) + " is broken: " + Msg));
6244 for (const Elf_Shdr &Shdr : unwrapOrError(this->FileName, Obj->sections())) {
6246 if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES)
6249 Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj->getSectionContents(&Shdr);
6250 if (!ContentsOrErr) {
6251 Warn(I, toString(ContentsOrErr.takeError()));
6255 ArrayRef<uint8_t> Contents = *ContentsOrErr;
6256 if (!Contents.empty() && Contents.back() != 0) {
6257 Warn(I, "the content is not null-terminated");
6261 for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) {
6262 StringRef Lib((const char *)I);
6264 I += Lib.size() + 1;
6269 template <class ELFT>
6270 void LLVMStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) {
6271 ListScope L(W, "StackSizes");
6272 if (Obj->isRelocatableObject())
6273 this->printRelocatableStackSizes(Obj, []() {});
6275 this->printNonRelocatableStackSizes(Obj, []() {});
6278 template <class ELFT>
6279 void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
6280 DictScope D(W, "Entry");
6281 W.printString("Function", FuncName);
6282 W.printHex("Size", Size);
6285 template <class ELFT>
6286 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
6287 auto PrintEntry = [&](const Elf_Addr *E) {
6288 W.printHex("Address", Parser.getGotAddress(E));
6289 W.printNumber("Access", Parser.getGotOffset(E));
6290 W.printHex("Initial", *E);
6293 DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT");
6295 W.printHex("Canonical gp value", Parser.getGp());
6297 ListScope RS(W, "Reserved entries");
6299 DictScope D(W, "Entry");
6300 PrintEntry(Parser.getGotLazyResolver());
6301 W.printString("Purpose", StringRef("Lazy resolver"));
6304 if (Parser.getGotModulePointer()) {
6305 DictScope D(W, "Entry");
6306 PrintEntry(Parser.getGotModulePointer());
6307 W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
6311 ListScope LS(W, "Local entries");
6312 for (auto &E : Parser.getLocalEntries()) {
6313 DictScope D(W, "Entry");
6318 if (Parser.IsStatic)
6322 ListScope GS(W, "Global entries");
6323 for (auto &E : Parser.getGlobalEntries()) {
6324 DictScope D(W, "Entry");
6328 const Elf_Sym *Sym = Parser.getGotSym(&E);
6329 W.printHex("Value", Sym->st_value);
6330 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
6331 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin());
6333 std::string SymName = this->dumper()->getFullSymbolName(
6334 Sym, this->dumper()->getDynamicStringTable(), true);
6335 W.printNumber("Name", SymName, Sym->st_name);
6339 W.printNumber("Number of TLS and multi-GOT entries",
6340 uint64_t(Parser.getOtherEntries().size()));
6343 template <class ELFT>
6344 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
6345 auto PrintEntry = [&](const Elf_Addr *E) {
6346 W.printHex("Address", Parser.getPltAddress(E));
6347 W.printHex("Initial", *E);
6350 DictScope GS(W, "PLT GOT");
6353 ListScope RS(W, "Reserved entries");
6355 DictScope D(W, "Entry");
6356 PrintEntry(Parser.getPltLazyResolver());
6357 W.printString("Purpose", StringRef("PLT lazy resolver"));
6360 if (auto E = Parser.getPltModulePointer()) {
6361 DictScope D(W, "Entry");
6363 W.printString("Purpose", StringRef("Module pointer"));
6367 ListScope LS(W, "Entries");
6368 for (auto &E : Parser.getPltEntries()) {
6369 DictScope D(W, "Entry");
6372 const Elf_Sym *Sym = Parser.getPltSym(&E);
6373 W.printHex("Value", Sym->st_value);
6374 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
6375 printSymbolSection(Sym, this->dumper()->dynamic_symbols().begin());
6377 std::string SymName =
6378 this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true);
6379 W.printNumber("Name", SymName, Sym->st_name);
6384 template <class ELFT>
6385 void LLVMStyle<ELFT>::printMipsABIFlags(const ELFObjectFile<ELFT> *ObjF) {
6386 const ELFFile<ELFT> *Obj = ObjF->getELFFile();
6387 const Elf_Shdr *Shdr =
6388 findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags");
6390 W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
6393 ArrayRef<uint8_t> Sec =
6394 unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
6395 if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) {
6396 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n";
6400 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data());
6402 raw_ostream &OS = W.getOStream();
6403 DictScope GS(W, "MIPS ABI Flags");
6405 W.printNumber("Version", Flags->version);
6406 W.startLine() << "ISA: ";
6407 if (Flags->isa_rev <= 1)
6408 OS << format("MIPS%u", Flags->isa_level);
6410 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev);
6412 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType));
6413 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags));
6414 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType));
6415 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size));
6416 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size));
6417 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size));
6418 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1));
6419 W.printHex("Flags 2", Flags->flags2);